Summary of Significant Accounting Policies (Details) - Schedule of earnings per common share basic and diluted - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of earnings per common share basic and diluted [Abstract]
Net income available to common stockholders	$ (2,024)	$ 11,856	$ 10,859	$ 10,369	$ 9,540	$ 10,814	$ 10,493	$ 10,351	$ 31,060	$ 41,199	$ 18,453
Dividends paid on earnings allocated to participating securities									(147)	(157)	(50)
Income attributable to common stock									$ 30,913	$ 41,042	$ 18,515
Weighted average common shares outstanding, including participating securities									30,453	29,989	23,050
Weighted average participating securities									(54)	(51)	(20)
Weighted average common shares outstanding									30,399	29,938	23,030
Incremental shares from assumed conversions of options, performance units and restricted shares									291	346	449
Weighted average common and equivalent shares outstanding									30,690	30,284	23,479
Earnings per common share:
Basic	$ (0.07)	$ 0.39	$ 0.36	$ 0.35	$ 0.32	$ 0.36	$ 0.35	$ 0.35	$ 1.02	$ 1.37	$ 0.80
Diluted	$ (0.07)	$ 0.39	$ 0.36	$ 0.34	$ 0.31	$ 0.36	$ 0.35	$ 0.34	$ 1.01	$ 1.36	$ 0.79