Annual report pursuant to Section 13 and 15(d)

Compensation and Other Benefit Plans - Unvested RSU Activity (Details)

v3.6.0.2
Compensation and Other Benefit Plans - Unvested RSU Activity (Details) - Restricted Stock Units (RSUs) [Member]
12 Months Ended
Dec. 31, 2016
$ / shares
shares
Unvested RSU activity [Roll Forward]  
Unvested balance beginning of period (in shares) | shares 106,205
Granted, shares | shares 127,367
Vested (in shares) | shares (108,649)
Forfeited (in shares) | shares (33,695)
Unvested balance end of period (in shares) | shares 91,228
Unvested RSU activity, weighted average grant date fair value [Roll Forward]  
Unvested balance, beginning of period (in dollars per share) | $ / shares $ 81.42
Granted (in dollars per share) | $ / shares 14.82
Vested (in dollars per share) | $ / shares 49.17
Forfeited (in dollars per share) | $ / shares 46.32
Unvested balance, end of period (in dollars per share) | $ / shares $ 39.82