| Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|
|
|
As
of December 31,
|
|
|
|
|
2011
|
|
|
2010
|
|
|
Deferred
tax assets (liabilities):
|
|
|
|
|
|
|
|
|
|
Property
and equipment
|
|
$
|
(144,185
|
)
|
|
$
|
(193,617
|
)
|
|
Deferred
revenue
|
|
|
1,517,024
|
|
|
|
2,503,984
|
|
|
Accrued
expenses
|
|
|
1,138,800
|
|
|
|
1,518,400
|
|
|
Other
|
|
|
727,207
|
|
|
|
297,309
|
|
|
Net
operating loss carryforwards
|
|
|
18,509,210
|
|
|
|
14,758,835
|
|
|
|
|
|
21,748,056
|
|
|
|
18,884,911
|
|
|
Less
valuation allowance
|
|
|
(21,748,056
|
)
|
|
|
(18,884,911
|
)
|
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|