Long-Term Debt - (ABL Facilities) (Details) (USD $)	9 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended				3 Months Ended			1 Months Ended	3 Months Ended	1 Months Ended				3 Months Ended			9 Months Ended	3 Months Ended
	Sep. 27, 2014	Sep. 27, 2014 Line of credit	Sep. 28, 2013 Line of credit	Sep. 27, 2014 Line of credit	Dec. 28, 2013 Line of credit	Sep. 27, 2014 US facility	Apr. 18, 2013 US facility	Apr. 18, 2013 Canadian facility	Sep. 27, 2014 LIBOR US facility	Jun. 28, 2014 LIBOR US facility	Jun. 28, 2014 CDOR US facility	Sep. 27, 2014 CDOR Canadian facility	Sep. 27, 2014 CDOR Canadian facility	Sep. 27, 2014 One-month LIBOR US facility	Jun. 28, 2014 One-month LIBOR US facility	Jun. 28, 2014 30 Day CDOR Canadian facility	Sep. 27, 2014 30 Day CDOR Canadian facility	Sep. 27, 2014 US prime rate US facility	Jun. 28, 2014 US prime rate US facility	Jun. 28, 2014 Canadian primate rate Canadian facility	Sep. 27, 2014 Canadian primate rate Canadian facility	Sep. 27, 2014 Federal Funds Effective Rate US facility	Jun. 28, 2014 Federal Funds Effective Rate US facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity							$ 150,000,000	$ 75,000,000
Debt instrument, covenant minimum availability as percentage of borrowing base				10.00%
Debt instrument, covenant minimum availability				20,000,000
Fixed charge coverage ratio	0.88:1.00
Line of credit facility, increase (decrease) in borrowing capacity, net					12,000,000
Write off of deferred debt issuance cost			500,000
Debt instrument, description of variable rate basis									LIBOR			CDOR	CDOR	one-month LIBOR				prime rate			Canadian prime	Federal Funds Effective Rate
Debt instrument, basis spread on variable rate									2.00%	0.02%	0.02%				0.01%	0.01%		1.00%	0.01%	0.01%			0.01%
Line of credit facility, unused capacity, commitment fee percentage		0.375%
Debt instrument, additional basis rate														1.00%			1.00%					0.50%
Line of credit facility, amount outstanding		46,000,000		46,000,000
Line of credit facility, remaining borrowing capacity		142,700,000		142,700,000
Line of credit facility, interest rate at period end						3.20%
Letters of Credit Outstanding, Amount		$ 12,900,000		$ 12,900,000