Statements of Cash Flows Supplemental Disclosures - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid - non-lease	$ 2,000	$ 354,000
Income taxes paid	525,000	273,000
OTHER NON-CASH INVESTING AND FINANCING ACTIVITIES:
Capital assets not yet paid for	4,377,000	380,000
Issuance of Class D units for land	0	264,000
Convertible Debt	18,800,000	0
Liabilities of Business Transferred under Contractual Arrangement, Current	917,000	0
Capital assets not yet received	$ 0	$ 380,000