Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details 2)

v3.7.0.1
Stockholders' Equity (Details 2) - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]    
Balance at beginning 119,067 117,895
Granted 53,750 61,912
Forfeited (6,918) (2,562)
Vested (74,447) (58,178)
Balance at ending 91,452 119,067
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]    
Balance at beginning $ 18.77 $ 20.80
Granted 3.01 18.77
Forfeited 28.66 23.76
Vested 18.16 21.13
Balance at ending $ 10.53 $ 18.77