CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Cash and cash equivalents	$ 961,000	$ 448,000
Accounts receivable, allowance for doubtful accounts	300,000	300,000
Prepaid expenses and other current assets	3,422,000	6,530,000
Property and equipment, net	93,865,000	95,533,000
Other assets	159,000	161,000
Accounts payable	17,186,000	20,069,000
Accrued expenses	5,510,000	4,959,000
Customer deposits	635,000	551,000
Debt, current portion	11,841,000	11,364,000
Other liabilities	$ 3,726,000	$ 5,049,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	15,190,000	15,190,000
Common stock, shares outstanding	15,167,000	15,167,000
Treasury stock, par value	$ 0.001	$ 0.001
Treasury stock, shares	23,000	23,000
VIE, Primary Beneficiary
Cash and cash equivalents	$ 100,000	$ 100,000
Prepaid expenses and other current assets	100,000	100,000
Property and equipment, net	47,500,000	47,800,000
Other assets	100,000	100,000
Accounts payable	0	600,000
Accrued expenses	200,000	100,000
Customer deposits	100,000	0
Debt, current portion	700,000	700,000
Long-term debt, net of current portion	36,500,000	36,700,000
Debt discount	100,000	100,000
Other liabilities	$ 2,600,000	$ 3,900,000