Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]

Fair value assets and liabilities measured on recurring basis

The following tables provide a summary of the Company’s significant financial assets and liabilities carried at fair value and measured on a recurring basis as of September 30, 2012 and January 1, 2012 (in thousands):

			Fair Value Measurements at September 30, 2012
	Total Carrying Value at September 30, 2012		Quoted Prices in Active Markets (Level 1)		Significant Other Observable  Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Interest rate swap derivative assets	$	6,997	$	—	$	6,997	$	—
Restricted investments:
Guaranteed Investment Contract	5,742		—		5,742		—
Rabbi Trust	9,341		9,341		—		—
Fixed income securities	2,172		—		2,172		—
Liabilities:
Interest rate swap derivative liabilities	$	747	$	—	$	747	$	—

			Fair Value Measurements at January 1, 2012
	Total Carrying Value at January 1, 2012		Quoted Prices in Active Markets (Level 1)		Significant Other Observable  Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Interest rate swap derivative assets	$	7,440	$	—	$	7,440	$	—
Restricted investments:
Guaranteed Investment Contract	5,742		—		5,742		—
Guaranteed Repurchase Agreements	33,821		—		33,821		—
Rabbi Trust	8,016		5,898		2,118		—
Fixed income securities	2,013		—		2,013		—