Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of assets and liabilities measured at fair value on recurring basis

Assets and liabilities measured at fair value are based on one or more of four valuation techniques. The four valuation techniques are identified in the table below and are as follows:


(a)	Market approach—prices and other relevant information generated by market transactions involving identical or comparable assets


(b)	Cost approach—amount that would be required to replace the service capacity of an asset (replacement cost)


(c)	Income approach—techniques to convert future amounts to a single present amount based on market expectations (including present value techniques, option-pricing and excess earnings models)

(d)

The valuations of the interest rate swaps intended to mitigate the Company’s interest rate risk are determined with the assistance of a third-party financial institution using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. This analysis utilizes observable market-based inputs, including interest rate curves and interest rate volatility, and reflects the contractual terms of these instruments, including the period to maturity.

The following tables present financial assets at December 31, 2012 and December 31, 2011 for which the Company measures fair value on a recurring basis, by level, within the fair value hierarchy:



December 31, 2012	Total		Level 1		Level 2		Level 3		Valuation Technique
Assets
Money market mutual funds	$	9,921	$	9,921	$	—	$	—	(a)
Government agency bonds	6,817		6,817		—		—		(a)
United States treasuries	6,089		6,089		—		—		(a)
Corporate notes	4,679		4,679		—		—		(a)
Certificates of deposit	1,800		1,800		—		—		(a)
Liabilities
Interest rate swaps	$	542	$	—	$	542	$	—	(d)
December 31, 2011	Total		Level 1		Level 2		Level 3		Valuation Technique
Assets
Money market mutual funds	$	8,818	$	8,818	$	—	$	—	(a)
Government agency bonds	9,015		9,015		—		—		(a)
United States treasuries	—		—		—		—
Corporate notes	3,019		3,019		—		—		(a)
Certificates of deposit	2,701		2,701		—		—		(a)
Liabilities
Interest rate swaps	$	510	$	—	$	510	$	—	(d)