Stockholders' Equity (Tables)
|
6 Months Ended |
12 Months Ended |
Jun. 30, 2012
|
Dec. 31, 2011
|
Impact of Conversions to Common Stock [Table Text Block] |
|
|
Impact
to Balance Sheet
|
|
|
Increase
in
|
|
|
|
Before
|
|
|
Impact
of
|
|
|
After
|
|
|
Common
Shares
|
|
|
|
Conversions
|
|
|
Conversions
|
|
|
Conversions
|
|
|
Outstanding
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Impact
on assets
|
|
|
|
|
|
|
|
|
|
|
|
|
Deferred
costs
|
|
$
|
799,123
|
|
|
$
|
(799,123
|
)
|
|
$
|
-
|
|
|
|
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
Impact
on liabilities and equity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Accrued
interest on converted notes
|
|
$
|
974,311
|
|
|
$
|
(974,311
|
)
|
|
$
|
-
|
|
|
|
1,092,559
|
|
Summer
2011 Notes, net
|
|
|
904,397
|
|
|
|
(904,397
|
)
|
|
|
-
|
|
|
|
2,183,334
|
|
March
2010 Notes, net
|
|
|
4,057,500
|
|
|
|
(4,057,500
|
)
|
|
|
-
|
|
|
|
4,071,000
|
|
2011
Unit Offering Notes, net
|
|
|
4,367,482
|
|
|
|
(4,367,482
|
)
|
|
|
-
|
|
|
|
9,050,834
|
|
Total
impact on liabilities
|
|
|
10,303,690
|
|
|
|
(10,303,690
|
)
|
|
|
-
|
|
|
|
16,397,727
|
|
Series
A convertible preferred stock
|
|
|
7,965,000
|
|
|
|
(7,965,000
|
)
|
|
|
-
|
|
|
|
7,965,000
|
|
Additional
paid-in capital and common stock
|
|
|
-
|
|
|
|
19,345,209
|
|
|
|
19,345,209
|
|
|
|
-
|
|
Accumulated
deficit
|
|
|
-
|
|
|
|
(1,875,642
|
)
|
|
|
(1,875,642
|
)
|
|
|
-
|
|
Total
impact on equity
|
|
|
7,965,000
|
|
|
|
9,504,567
|
|
|
|
17,469,567
|
|
|
|
7,965,000
|
|
Total
impact on liabilities and equity
|
|
$
|
18,268,690
|
|
|
$
|
(799,123
|
)
|
|
$
|
17,469,567
|
|
|
|
24,362,727
|
|
|
|
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|
|
Shares
|
|
|
Weighted
- Average Exercise Price
|
|
Outstanding,
January 1, 2012
|
|
|
3,679,977
|
|
|
$
|
2.05
|
|
Granted
|
|
|
2,746,400
|
|
|
|
1.00
|
|
Forfeited
|
|
|
(315,250
|
)
|
|
|
2.16
|
|
Outstanding,
June 30, 2012
|
|
|
6,111,127
|
|
|
|
1.57
|
|
|
|
|
Options
Outstanding
|
|
|
Options
Exercisable
|
|
Range
of
Exercise
Prices
|
|
Weighted-
average
Exercise
price
per
share
|
|
|
Intrinsic
Value
(1)
|
|
Balance
at January 1, 2009
|
|
|
599,875
|
|
|
|
|
|
$
|
0.88
|
-
|
$
|
24.00
|
|
$
|
3.62
|
|
|
$
|
3,742,700
|
|
Options
exercisable at January 1, 2009
|
|
|
|
|
|
|
432,083
|
|
|
0.88
|
-
|
|
24.00
|
|
|
2.70
|
|
|
|
3,133,667
|
|
Options
granted (2)
|
|
|
93,402
|
|
|
|
|
|
|
|
9.64
|
|
|
|
|
9.64
|
|
|
|
|
|
Options
exercised
|
|
|
(3,333
|
)
|
|
|
|
|
|
|
3.20
|
|
|
|
|
3.20
|
|
|
|
|
|
Options
cancelled or forfeited
|
|
|
(20,167
|
)
|
|
|
|
|
|
1.64
|
-
|
|
20.00
|
|
|
9.60
|
|
|
|
|
|
Balance
at December 31, 2009
|
|
|
669,777
|
|
|
|
|
|
|
0.88
|
-
|
|
24.00
|
|
|
4.28
|
|
|
|
3,694,400
|
|
Options
exercisable at December 31, 2009
|
|
|
|
|
|
|
483,364
|
|
|
0.88
|
-
|
|
24.00
|
|
|
2.78
|
|
|
|
3,424,333
|
|
Options
granted (2)
|
|
|
3,246,450
|
|
|
|
|
|
|
|
1.80
|
|
|
|
|
1.80
|
|
|
|
|
|
Options
cancelled or forfeited
|
|
|
(153,750
|
)
|
|
|
|
|
|
3.20
|
-
|
|
24.00
|
|
|
|
|
|
|
|
|
Outstanding
at December 31, 2010
|
|
|
3,762,477
|
|
|
|
|
|
|
0.88
|
-
|
|
24.00
|
|
|
2.11
|
|
|
|
262,500
|
|
Options
exercisable at December 31, 2010
|
|
|
|
|
|
|
433,746
|
|
|
0.88
|
-
|
|
24.00
|
|
|
3.03
|
|
|
|
262,500
|
|
Options
cancelled or forfeited
|
|
|
(82,500
|
)
|
|
|
|
|
|
1.80
|
-
|
|
24.00
|
|
|
4.93
|
|
|
|
|
|
Outstanding
at December 31, 2011
|
|
|
3,679,977
|
|
|
|
|
|
|
0.88
|
-
|
|
9.64
|
|
|
2.05
|
|
|
|
—
|
|
Options
exercisable at December 31, 2011
|
|
|
|
|
|
|
1,501,659
|
|
|
0.88
|
-
|
|
9.64
|
|
|
2.15
|
|
|
|
—
|
|
|
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
Dividend
yield
|
|
0%
|
|
Expected
Volatility
|
|
45.2%
|
|
Risk
free Interest rates
|
0.93%
|
-
|
1.13%
|
Expected
lives (years)
|
|
6.0
|
|
|
|
|
Year
Ended December 31,
|
|
|
|
2010
|
|
|
2009
|
|
Dividend
yield
|
|
0%
|
|
|
|
0%
|
|
|
Expected
Volatility
|
|
44.81%
|
|
|
23.45%
|
to
|
38.28%
|
|
Risk
free Interest rates
|
|
2.36%
|
|
|
1.48%
|
to
|
2.43%
|
|
Expected
lives (years)
|
|
6.0
|
|
|
3.25
|
to
|
5.75
|
|
|
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
Three
Months Ended June 30,
|
|
|
Six
Months Ended June 30,
|
|
2012
|
|
|
2011
|
|
|
2012
|
|
|
2011
|
|
$
|
313,707
|
|
|
$
|
253,917
|
|
|
$
|
543,562
|
|
|
$
|
508,660
|
|
|
|
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] |
|
|
Shares
|
|
|
Weighted
- Average Exercise Price
|
|
Outstanding,
January 1, 2012
|
|
|
1,922,944
|
|
|
$
|
0.43
|
|
Warrants
issued
|
|
|
4,335,704
|
|
|
|
0.80
|
|
Outstanding,
June 30, 2012
|
|
|
6,258,648
|
|
|
|
0.69
|
|
|
|
|
|
|
|
Weighted -
|
|
|
|
|
|
|
Average
|
|
|
|
|
|
|
Exercise
|
|
|
|
Shares
|
|
|
Price
|
|
Warrants
outstanding at January 1, 2009
|
|
|
828,502
|
|
|
$
|
1.74
|
|
|
|
|
Warrants
that expired during 2009
|
|
|
(417,960
|
)
|
|
|
0.04
|
|
|
|
|
|
|
|
|
|
|
Warrants
outstanding at December 31, 2009
|
|
|
410,542
|
|
|
|
0.42
|
|
|
|
|
Warrants
issued during 2010
|
|
|
25,444
|
|
|
|
8.00
|
|
|
|
|
|
|
|
|
|
|
Warrants
outstanding at December 31, 2010
|
|
|
435,986
|
|
|
|
3.74
|
|
|
|
|
Warrants
that expired during 2011
|
|
|
(410,542
|
)
|
|
|
3.48
|
|
|
|
|
Warrants
issued during 2011
|
|
|
2,122,500
|
|
|
|
0.29
|
|
|
|
|
Warrants
exercised during 2011
|
|
|
(225,000
|
)
|
|
|
0.01
|
|
|
|
|
|
|
|
|
|
|
Warrants
outstanding at December 31, 2011
|
|
|
1,922,944
|
|
|
|
0.43
|
|
|
Assumptions Used in Calculating Fair Value of Warrants Issued [Table Text Block] |
Dividend
yield
|
|
0%
|
|
Expected
Volatility
|
42.1%
|
-
|
49.0%
|
Risk
free Interest rates
|
0.30%
|
-
|
0.93%
|
Expected
lives (years)
|
1.9
|
-
|
5.0
|
|
|
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] |
|
|
|
|
Options
Outstanding
|
|
|
Options
Exercisable
|
|
Range
of
|
|
|
Number
Outstanding
|
|
|
Weighted
-
Average
Remaining
Contractual
Life
|
|
|
Weighted
-
Average
Exercise
Price
|
|
|
Number
Exercisable
|
|
|
Weighted
-
Average
Exercise
Price
|
|
$
|
0.88
|
-
|
0.96
|
|
|
|
287,500
|
|
|
|
2.33
|
|
|
$
|
0.89
|
|
|
|
287,500
|
|
|
$
|
0.89
|
|
|
|
1.80
|
|
|
|
|
3,195,950
|
|
|
|
8.96
|
|
|
|
1.80
|
|
|
|
1,065,318
|
|
|
|
1.80
|
|
|
3.20
|
-
|
9.64
|
|
|
|
196,527
|
|
|
|
4.75
|
|
|
|
7.74
|
|
|
|
148,841
|
|
|
|
7.13
|
|
|
|
|
|
|
3,679,977
|
|
|
|
8.21
|
|
|
|
2.05
|
|
|
|
1,501,659
|
|
|
|
2.15
|
|
|
Schedule of Nonvested Share Activity [Table Text Block] |
|
|
|
Shares
|
|
|
Weighted -
Average
Grant Date
Fair
Value
|
|
Nonvested
January 1, 2009
|
|
|
167,792
|
|
|
$
|
1.67
|
|
Granted
|
|
|
93,402
|
|
|
|
2.83
|
|
Forfeited/cancelled
|
|
|
(7,250
|
)
|
|
|
2.84
|
|
Vested
|
|
|
(67,531
|
)
|
|
|
1.11
|
|
Nonvested
December 31, 2009
|
|
|
186,413
|
|
|
|
2.41
|
|
|
|
|
Granted
|
|
|
3,246,450
|
|
|
|
0.83
|
|
Forfeited
|
|
|
(41,667
|
)
|
|
|
1.92
|
|
Vested
|
|
|
(62,465
|
)
|
|
|
2.31
|
|
Nonvested
December 31, 2010
|
|
|
3,328,731
|
|
|
|
0.88
|
|
|
|
|
Forfeited
|
|
|
(51,833
|
)
|
|
|
0.88
|
|
Vested
|
|
|
(1,098,580
|
)
|
|
|
0.89
|
|
Nonvested
December 31, 2011
|
|
|
2,178,318
|
|
|
|
0.87
|
|
|
Schedule of Share-based Payment Award, Warrants, Valuation Assumptions [Table Text Block] |
|
|
|
Year
Ended December 31,
|
|
|
|
2011
|
|
|
2010
|
|
Dividend
yield
|
|
|
0%
|
|
|
|
0%
|
|
Expected
Volatility
|
|
48.67%
|
to
|
49.36%
|
|
|
44.81%
|
|
Risk
free Interest rates
|
|
0.81%
|
to
|
1.13%
|
|
|
2.36%
|
|
Expected
lives (years)
|
|
|
5.0
|
|
|
|
5.0
|
|
|