Summary of Significant Accounting Policies - Financial Assets and Liabilities that are Measured At Fair Value and are Categorized Using Fair Value Heirarchy (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)	Dec. 29, 2018	Dec. 30, 2017
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring	$ 13,487,000	$ 10,266,000
Financial Liabilities	4,125,000
Interest Rate Swap | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring	0	0
Financial Liabilities	0
Interest Rate Swap | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring	13,487,000	10,266,000
Financial Liabilities	4,125,000
Interest Rate Swap | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring	0
Financial Liabilities	0
Contingent Consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Liabilities	3,566,000	1,780,000
Contingent Consideration [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Liabilities	0	0
Contingent Consideration [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Liabilities	0	0
Contingent Consideration [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Liabilities	$ 3,566,000	$ 1,780,000