Net Income Per Common Share (Tables)

12 Months Ended

Dec. 31, 2014

Basic and diluted net income per common share

Basic and diluted net income per common share calculations are as follows for the periods presented:



	Year Ended December 31,
	2014		2013		2012
Basic
Net income applicable to common stock	$	59,582	$	33,487	$	26,637
Average common shares outstanding	31,499,498		27,269,613		25,108,652
Net income per common share—basic	$	1.89	$	1.23	$	1.06
Diluted
Net income applicable to common stock	$	59,582	$	33,487	$	26,637
Average common shares outstanding	31,499,498		27,269,613		25,108,652
Effect of dilutive stock-based compensation	260,149		191,144		66,340
Average common shares outstanding—diluted	31,759,647		27,460,757		25,174,992
Net income per common share—diluted	$	1.88	$	1.22	$	1.06

Schedule of potentially dilutive securities excluded from computation of earnings per share

Stock options that could potentially dilute basic net income per common share in the future that were not included in the computation of diluted net income per common share due to their anti-dilutive effect were as follows for the periods presented:



	Year Ended
	December 31,
	2014	2013
Number of shares	109,068	164,540
Range of exercise prices	$29.57 - $30.63	$19.14 - $30.63