Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Accruals and reserves	$ 32,920	$ 27,271
State net operating loss carryforwards	8,965	10,771
Basis difference in property and equipment	9,941	20,923
Fair value of interest rate swaps	1,354	1,153
Deferred Tax Assets Basis Difference Related to ROU Assets	98,447	93,808
Interest and state taxes associated with the liability for uncertain income tax positions	987	938
Other	1,904	2,146
Deferred Tax Assets, Net of Valuation Allowance, Total	154,945	157,010
Deferred Tax Assets, Inventory	427	0
Deferred tax liabilities:
Basis difference in inventories	0	(804)
Basis difference in goodwill	(24,497)	(61,397)
Deferred Tax Liability Basis Difference in ROU Assets	(95,078)	(90,679)
Other	(1,603)	(2,316)
Total deferred tax liabilities	(121,178)	(155,196)
Valuation allowance	(5,184)	(7,775)
Net deferred tax asset (liability)	$ (28,583)	$ (5,961)