Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

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 (in thousands, except per share data):

	Year Ended December 31,
	2012		2011		2010
Numerator:
Income from continuing operations	$	31,075	$	28,584	$	28,155
Denominator:
Basic
Weighted average common shares outstanding		49,002		49,328		57,692
Diluted
Stock Options(1)		—		61		106
Restricted stock awards(1)		186		179		135
Contingent shares(2)		64		31		260
Diluted weighted average common shares outstanding		49,252		49,599		58,193
Earnings Per Share:
Basic earnings per share from continuing operations	$	0.63	$	0.58	$	0.49
Diluted earnings per share from continuing operations	$	0.63	$	0.58	$	0.48

(1) For the years ended December 31, 2012, 2011 and 2010, a total of 8,202, 6,429 and 5,382 stock based awards (in thousands), 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 CBIZ once future conditions have been met. See Note 19 for further discussion of acquisitions.