Fair Value of Financial Instruments - Non-Financial Assets and Liabilities (Details) - Nonrecurring - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 31, 2019
Fair Value, Assets Measured on Nonrecurring Basis
Continuing operations	$ 341
Closed operations		$ 988
Total	341	988
Changes Measurement
Fair Value, Assets Measured on Nonrecurring Basis
Continuing operations	895
Closed operations		1,586
Total	895	1,586
Carrying Amount
Fair Value, Assets Measured on Nonrecurring Basis
Continuing operations	341
Closed operations		988
Total	341	988
Level 1
Fair Value, Assets Measured on Nonrecurring Basis
Continuing operations	0
Closed operations		0
Total	0	0
Level 2
Fair Value, Assets Measured on Nonrecurring Basis
Continuing operations	0
Closed operations		0
Total	0	0
Level 3
Fair Value, Assets Measured on Nonrecurring Basis
Continuing operations	341
Closed operations		988
Total	$ 341	$ 988