Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share from Continuing Operations

The following table sets forth the computation of basic and diluted earnings per share from continuing operations for the three and nine months ended September 30, 2018 and 2017 (in thousands, except per share data).

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Numerator:
Income from continuing operations	$	13,595	$	9,864	$	62,526	$	46,306
Denominator:
Basic
Weighted average common shares outstanding		54,794		54,142		54,489		53,804
Diluted
Stock options (1)		1,654		1,433		1,573		1,499
Restricted stock awards (1)		268		244		307		330
Contingent shares (2)		24		8		24		8
Diluted weighted average common shares    outstanding		56,740		55,827		56,393		55,641
Basic earnings per share from continuing operations	$	0.25	$	0.18	$	1.15	$	0.86
Diluted earnings per share from continuing operations	$	0.24	$	0.18	$	1.11	$	0.83

(1) A total of 0.5 million and 0.3 million share based awards were excluded from the calculation of diluted earnings per share for the three and nine months ended September 30, 2018, respectively, and a total of 0.8 million and 0.4 million share based awards were excluded from the calculation of diluted earnings per share for the three and nine months ended September 30, 2017, respectively, as their effect would be anti-dilutive.

(2) Contingent shares represent additional shares to be issued for purchase price earned by former owners of businesses acquired by us once future considerations have been met. Refer to Note 14, Acquisitions, for further details.