Net Income Per Share of Common Stock (Details) - shares	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
Earnings Per Share [Abstract]
Common stock dividend declared, percent									5.00%	2.50%	0.00%
Average shares outstanding	16,558,984	16,573,041	16,569,408	16,537,536	15,927,663	15,942,178	15,986,695	16,023,053	17,385,952	17,182,663	17,056,076