Fair Value Measurements and Financial Instruments (Tables)

9 Months Ended

Sep. 27, 2014

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value on a recurring basis [Table Text Block]

Our assets and liabilities measured at fair value on a recurring basis at September 27, 2014, were as follows:

			Fair Value Measurements at September 27, 2014 Using:
Assets and Liabilities Recorded at Fair Value on a Recurring Basis	Total Carrying Value at September 27, 2014		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Assets invested for self-insurance, classified as other assets, noncurrent	$	13,078	$	13,078	$	—	$	—
Liabilities:
Deferred compensation	$	1,400	$	—	$	1,400	$	—

M.    Fair Value Measurements and Financial Instruments (continued)

Our assets and liabilities measured at fair value on a recurring basis at December 31, 2013 were as follows:

			Fair Value Measurements at December 31, 2013 Using:
Assets and Liabilities Recorded at Fair Value on a Recurring Basis	Total Carrying Value at December 31, 2013		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Assets invested for self-insurance, classified as other assets, noncurrent	$	12,716	$	12,716	$	—	$	—
Liabilities:
Deferred compensation	$	1,144	$	—	$	1,144	$	—

Financial instruments recorded at historical carrying value [Table Text Block]

Financial instruments classified as noncurrent liabilities and their carrying values and fair values were as follows:

	September 27, 2014				December 31, 2013
Financial Instruments Recorded at Historical Carrying Value	Carrying Value		Fair Value		Carrying Value		Fair Value
Revolving credit facility, noncurrent	$	54,600	$	54,600	$	20,000	$	20,000
Senior unsecured notes	30,000		30,099		30,000		28,219
Term loans, noncurrent	6,978		6,742		34		34
Total	$	91,578	$	91,441	$	50,034	$	48,253

Schedule of derivative instruments in statement of financial position, fair value [Table Text Block]

The following table sets forth quantitative information related to our derivative instruments and where amounts were recorded in our consolidated financial statements.

	Three Months Ended					Nine Months Ended
	September 27, 2014		September 28, 2013			September 27, 2014		September 28, 2013
Economic Hedges - Derivatives Not Designated as Hedging Instruments
Fuel Derivatives:
Change in fair value, recognized in results of operations, as a (reduction) increase in operating costs and expenses	$	—	$	(92	)	$	—	$	(125	)