Debt Obligations - Summary of Debt Obligations (Details) - USD ($) $ in Thousands	Sep. 28, 2018	Dec. 29, 2017
Debt Instrument [Line Items]
Deferred finance fees and original issue discount	$ (6,654)	$ (8,027)
Total debt obligations	280,246	317,822
Less: current installments	(30)	(3,827)
Total debt obligations excluding current installments	280,216	313,995
Senior secured term loan
Debt Instrument [Line Items]
Long-term debt	239,745	288,435
Convertible subordinated notes
Debt Instrument [Line Items]
Long-term debt	0	36,750
Asset based loan facility
Debt Instrument [Line Items]
Long-term debt	47,100	0
Capital leases and financed software
Debt Instrument [Line Items]
Long-term debt	$ 55	$ 664

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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