Derivative Instruments - Interest Rate Hedges in the Condensed Consolidated Balance Sheets (Details) - Cash Flow Hedging - Designated as hedging instrument - Interest Rate Swap - USD ($) $ in Thousands	Mar. 29, 2019	Dec. 31, 2018
Other current assets
Derivative [Line Items]
Interest rate swap designated as cash flow hedge, assets	$ 73	$ 121
Other accrued liabilities
Derivative [Line Items]
Interest rate swap designated as cash flow hedge, liability	18
Other non-current liabilities
Derivative [Line Items]
Interest rate swap designated as cash flow hedge, liability	$ 198
Other non-current assets
Derivative [Line Items]
Interest rate swap designated as cash flow hedge, assets		$ 104