Post-effective amendment to a registration statement that is not immediately effective upon filing

Stockholders' Equity (Details)

v3.7.0.1
Stockholders' Equity (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding at beginning 337,441 298,283 258,583
Exercisable at beginning 245,989 179,216 140,687
Granted 2,000 53,750 61,912
Exercised  
Cancelled or forfeited   (14,592) (22,212)
Outstanding at ending 315,566 337,441 298,283
Exercisable at ending   245,989 179,216
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Outstanding at beginning $ 42.07 $ 48.73 $ 54.38
Exercisable at beginning 38.71 56.40 62.27
Granted 2.55 6.40 32.80
Exercised    
Cancelled or forfeited   12.67 59.20
Outstanding at ending $ 42.33 42.07 48.73
Exercisable at ending   $ 38.71 $ 56.40
Share-based Compensation Arrangement by Share-based Payment Award, Options, Intrinsic Value [Abstract]      
Outstanding at beginning [1] $ 4,800 [1]
Exercisable at beginning [1] 600 [1]
Outstanding at ending   [1]
Exercisable at ending   [1]
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Outstanding at beginning $ 5.00 $ 29.60 $ 32.00
Exercisable at beginning 5.00 29.60 40.00
Granted   5.00 29.60
Exercised    
Cancelled or forfeited   5.00 32.00
Outstanding at ending   5.00 29.60
Exercisable at ending   5.00 29.60
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Outstanding at beginning 385.60 385.60 385.60
Exercisable at beginning $ 385.60 385.60 385.60
Granted   12.40 42.40
Exercised    
Cancelled or forfeited   385.60 128
Outstanding at ending   385.60 385.60
Exercisable at ending   $ 385.60 $ 385.60
[1] Intrinsic value is calculated as the estimated fair value of the Company's stock at the end of the related period less the option exercise price of in-the-money options.