XML 67 R55.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stockholders' Equity - Summary of Non-vested Options (Details) - $ / shares
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Non-vested Options, Number of Options [Roll Forward]    
Non-vested, beginning of period (in shares) 35,471 14,116
Granted (in shares)   32,765
Vested (in shares) (15,671) (9,994)
Forfeited (in shares) (5,218) (1,416)
Non-vested, end of period (in shares) 14,582 35,471
Non-vested Options, Weighted Average Exercise Price [Roll Forward]    
Non-vested, beginning of period (in dollars per share) $ 22.55 $ 332.16
Granted (in dollars per share)   28.48
Vested (in dollars per share) 26.85 421.60
Forfeited (in dollars per share) 19.23 574.72
Non-vested, end of period (in dollars per share) $ 19.11 $ 22.55