General form of registration statement for all companies including face-amount certificate companies

Stockholders' Equity (Details 2)

v3.7.0.1
Stockholders' Equity (Details 2) - $ / shares
 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, Nonvested, Number of Shares [Roll Forward]      
Balance at beginning 91,452 119,067 117,895
Granted 2,000 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 $ 10.53 $ 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