Earnings Per Share and Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Basic and diluted:
Net income	$ 5,540	$ 1,357	$ 6,529	$ 1,440
Less: Distributed and undistributed income (unvested restricted stock)	60	24	68	48
Net income attributable to common shareholders	$ 5,480	$ 1,333	$ 6,461	$ 1,392
Weighted-average shares (in shares)	14,631	14,540	14,616	14,540
Basic and diluted earnings per share - common shareholders (usd per share)	$ 0.37	$ 0.09	$ 0.44	$ 0.10