Computation of Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

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):

	First Quarter
	2018		2017 As Adjusted (Note 1)
Numerator:
Net income	$	21,125	$	11,395
Denominator:
Denominator for basic  earnings per share–weighted      average common shares		25,698		25,225
Effect of dilutive stock options		172		118
Effect of other common stock equivalents		438		628
Denominator for diluted earnings per share–adjusted      weighted average common shares		26,308		25,971
Basic Earnings Per Share	$	0.82	$	0.45
Diluted Earnings Per Share	$	0.80	$	0.44