Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets (liabilities):
Net operating loss and other carryforwards	$ 67	$ 859
Credit carryforwards	1,777	3,118
Accounts receivable	4,652	4,852
Prepaid expenses	(938)	(1,015)
Interest rate limitation	0	971
Right-of-use lease liability	78,674	82,194
Right-of-use lease asset	(75,443)	(79,843)
Depreciation	1,731	1,863
Tax goodwill and intangibles	(1,098)	(1,066)
Stock-based compensation	164	183
Accrued liabilities	124	504
Accrued rent	340	380
Impairment of long-lived assets	177	176
Interest rate swap	0	(4)
Hedge Ineffectiveness	0	(155)
Noncurrent self-insurance liabilities	6,350	6,363
Restitution	2,329	2,445
Other	28	30
Subtotal	18,934	21,855
Less valuation allowance	(18,934)	(21,855)
Total noncurrent deferred tax assets	$ 0	$ 0