Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Weighted average shares of non-vested restricted stock excluded from basic earnings per share	188,522	226,900	200,315	234,370
Calculation of basic and diluted earnings per common share
Weighted average number of common shares used for basic earnings per share	26,869,658	26,676,385	26,846,546	26,640,103
Effect of potential dilutive shares	214,517	327,448	194,475	312,193
Weighted average number of common shares and potential dilutive shares used for diluted earnings per share	27,084,175	27,003,833	27,041,021	26,952,296
Weighted average number of anti-dilutive shares outstanding at period-end that are excluded from the above reconciliation	4,531,200	4,146,782	5,134,417	4,148,613