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Employee Benefit Plans - Other (Details) - USD ($)		3 Months Ended
	Mar. 22, 2021	Mar. 31, 2021	Mar. 31, 2020
Defined Benefit Plan Disclosure
401(k) plan, percentage of employer match		3.00%
401(k) plan, maximum percentage contribution by employer		6.00%
Employer contribution	$ 1,000,000.0
SERP
Defined Benefit Plan Disclosure
SERP, accrued liability		$ 1,100,000
SERP, accrued expense		$ 97,000	$ 80,000

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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