Stock-Based Compensation - Summary Of Restricted Stock Awards (Details) - Restricted Stock Awards [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Shares
Unvested balance at beginning of period	394,697	155,040
Granted (in shares)	20,770	272,300
Vested (in shares)	(121,899)	(32,643)
Forfeited (in shares)	(7,500)
Unvested balance at end of period	286,068	394,697
Weighted Average Share Price
Unvested balance at beginning of period (in usd per share)	$ 12.56	$ 12.23
Granted (in usd per share)	13.13	12.70
Vested (in usd per share)	12.60	12.23
Forfeited (in usd per share)	10.87
Unvested balance at end of period (in usd per share)	$ 12.63	$ 12.56