Fair Value Measurements - Additional Information (Details) - USD ($)	3 Months Ended				12 Months Ended
	Dec. 31, 2020	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 0				$ 0	$ 1,153,000	$ 2,554,000
Operating Lease, Impairment Loss					3,427,000	0	0
Intangible asset impairment charges	0	$ 0	$ 19,571,000	$ 0	19,571,000	0	0
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit losses					0	0	0
Credit recoveries					0	0	$ 0
GVi Ventures, Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0				0	$ 0
GVi Ventures, Inc. | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, low range	0				0
GVi Ventures, Inc. | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, high range	$ 2,500,000				$ 2,500,000