Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share from Continuing Operations

The following table sets forth the reconciliation of the numerator and the denominator of basic earnings per share and diluted earnings per share from continuing operations for the years ended December 31, 2017, 2016 and 2015 (in thousands, except per share data):

	Year Ended December 31,
	2017		2016		2015
Numerator:
Income from continuing operations	$	51,032	$	40,607	$	35,003
Denominator:
Basic
Weighted average common shares outstanding		53,862		52,321		50,280
Diluted
Stock options (1)		1,499		870		876
Restricted stock awards		328		261		277
Contingent shares (2)		-		61		29
Convertible senior subordinated notes (3)		—		—		1,231
Diluted weighted average common shares outstanding		55,689		53,513		52,693
Earnings Per Share:
Basic earnings per share from continuing operations	$	0.95	$	0.78	$	0.70
Diluted earnings per share from continuing operations	$	0.92	$	0.76	$	0.66

(1) For the years ended December 31, 2017, 2016 and 2015, a total of 0.5 million, 0.8 million and 1.5 million stock based awards, respectively, were excluded from the calculation of diluted earnings per share as their exercise prices would render them 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 conditions have been met. For further details, refer to Note 18, Acquisitions.

(3) The 2010 Notes were retired on October 1, 2015 with the amounts available under the credit facility. The dilutive impact of potential shares to be issued related to the 2010 Notes was based on the average share price of $9.62 in 2015, which exceeded the conversion price of $7.41.