XML 50 R39.htm IDEA: XBRL DOCUMENT v3.19.1
Interest Rate Swaps Tax Impact of Derivative Liability on Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax $ (483) $ 636