Stockholders' Equity - Summary of Restricted Stock Activity (Details) - $ / shares	1 Months Ended	3 Months Ended	12 Months Ended
	Jul. 31, 2014	Sep. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restricted Stock Outstanding
Beginning balance (in shares)			969,549	1,107,549	1,305,638
Ending balance (in shares)			14,250	969,549	1,107,549
Restricted stock
Restricted Stock Outstanding
Beginning balance (in shares)			0	35,869	41,461
Granted (in shares)		5,122	0	0	0
Vested (in shares)	(1,220)			(35,869)	(5,592)
Canceled (in shares)			0	(2,439)	(1,463)
Ending balance (in shares)			0	0	35,869
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)				$ 7.31	$ 7.31
Granted (in dollars per share)		$ 4.10		0.00	0.00
Vested (in dollars per share)				$ 7.31	7.31
Outstanding at end of period (in dollars per share)					$ 7.31
Restricted Stock Units (RSUs)
Restricted Stock Outstanding
Beginning balance (in shares)			0
Granted (in shares)			73,750
Canceled (in shares)			(16,250)
Ending balance (in shares)			57,500	0
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)			$ 0.00
Granted (in dollars per share)			6.92
Canceled (in dollars per share)			5.54
Outstanding at end of period (in dollars per share)			$ 7.31	$ 0.00