Computation of Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Summary of Calculation of Basic Earnings Per Common Share and Diluted Earnings Per Common Share

The calculation of basic earnings per common share and diluted earnings per common share was as follows (in thousands, except per share amounts):

	Second Quarter				Six Months
	2016		2015		2016		2015
Numerator:
Net income	$	13,275	$	19,247	$	23,850	$	31,852
Denominator:
Denominator for basic  earnings per share–weighted      average common shares		25,030		24,936		25,014		24,870
Effect of dilutive stock options		43		128		45		143
Effect of other common stock equivalents		510		497		501		513
Denominator for diluted earnings per share–adjusted      weighted average common shares		25,583		25,561		25,560		25,526
Basic Earnings Per Share	$	0.53	$	0.77	$	0.95	$	1.28
Diluted Earnings Per Share	$	0.52	$	0.75	$	0.93	$	1.25