Borrowing Arrangements (Tables)

12 Months Ended

Dec. 31, 2012

Borrowing Arrangements [Abstract]

Summary of carrying amount of the debt and equity components

The carrying amount of the debt and equity components at December 31, 2012 and 2011 were as follow (in thousands):

	2012			2011
Principal amount of notes	$	130,000		$	130,000
Unamortized discount		(8,334	)		(10,972	)
Net carrying amount	$	121,666		$	119,028
Additional paid-in-capital, net of tax	$	8,555		$	8,555

CBIZ separately accounts for the debt and equity components of the 2006 Notes. The carrying amount of the debt and equity components at December 31, 2012 and 2011 were as follow (in thousands):

	2012		2011
Principal amount of notes	$	750	$	750
Unamortized discount		—		—
Net carrying amount	$	750	$	750
Additional paid-in-capital, net of tax	$	11,425	$	11,425

Summary of recognized interest expense on the 2010 Notes and the 2006 Notes

For the twelve months ended December 31, 2012 and 2011, CBIZ recognized interest expense on the 2010 Notes and the 2006 Notes as follows (in thousands):

	2012		2011
Contractual coupon interest	$	6,361	$	6,873
Amortization of discount		2,638		3,201
Amortization of deferred financing costs		720		809
Total interest expense	$	9,719	$	10,883

Summary of unsecured credit facility

The balance outstanding under the credit facility was $208.9 million and $145.0 million at December 31, 2012 and 2011, respectively. Rates for the years ended December 31, 2012 and 2011 were as follows:

	2012		2011
Weighted average rates		3.15%		3.27%
Range of effective rates		2.68% - 3.91%		2.43% - 5.75%