Equity Compensation (Restricted Stock Units) (Details) - Restricted stock units
9 Months Ended
Sep. 30, 2016
$ / shares
shares
Restricted stock units  
Non-vested balance at beginning of period (in shares) 425,000
Awarded 1,139,846
Vested (17,670)
Forfeited (89,719)
Non-vested balance at end of period (in shares) 1,457,457
Weighted Average Grant Date Fair Value  
Non-vested balance at beginning of period (in dollars per share) | $ / shares $ 8.18
Awarded (in dollars per share) | $ / shares 7.37
Vested (in dollars per share) | $ / shares 7.85
Forfeited (in dollars per share) | $ / shares 7.84
Non-vested balance at end of period (in dollars per share) | $ / shares $ 7.57
Shares withheld for tax purposes (in shares) 6,949
Issuance of shares net of shares withheld (in shares) 10,721