Stock-Based Compensation - Restricted Stock Activity (Details) - Restricted Stock Units - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Number of Shares
Non-vested, beginning balance	374,504	0
Shares granted	240,000	374,504
Shares vested	160,286	0
Shares forfeited	45,508	0
Non-vested, ending balance	408,710	374,504
Weighted Average Grant Date Fair Value
Weighted average grant date fair value, beginning balance (in dollars per share)	$ 5.08	$ 0.00
Shares granted (in dollars per share)	2.29	5.08
Shares vested (in dollars per share)	1.58	0.00
Shares forfeited (in dollars per share)	4.10	0.00
Weighted average grant date fair value, ending balance (in dollars per share)	$ 2.66	$ 5.08