Statements of Cash Flows Supplemental Disclosures - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 24, 2020
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid - non-lease		$ 176,000	$ 588,000
Income taxes paid		525,000	4,006,000
OTHER NON-CASH INVESTING AND FINANCING ACTIVITIES:
Capital assets not yet paid for		4,635,000	670,000
Issuance of Class D units for land		0	264,000
Convertible Debt	$ 18,800,000	18,800,000	0
Liabilities of Business Transferred under Contractual Arrangement, Current	917,000	917,000	0	$ 3,000
Debt Instrument, Convertible, Beneficial Conversion Feature	523,000	523,000	0
Consideration Received for Beneficial Interest Obtained for Transferring Financial Asset		10,087,000	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	$ 3,425,000	$ 3,425,000	$ 0