CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Cash and cash equivalents	$ 7,682,000	$ 448,000
Allowance for doubtful accounts	300,000	300,000
Prepaid expenses and other current assets	3,431,000	6,530,000
Property and equipment, net	92,936,000	95,533,000
Other assets	70,000	161,000
Accounts payable	24,354,000	20,069,000
Accrued expenses	6,584,000	4,959,000
Customer deposits	1,209,000	551,000
Long-term debt, current portion	711,000	11,364,000
Other liabilities	$ 4,205,000	$ 5,049,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	19,732,500	15,190,000
Common stock, shares outstanding (in shares)	19,709,500	15,167,000
Treasury stock, par value (in dollars per share)	$ 0.001	$ 0.001
Treasury stock, shares (in shares)	23,000	23,000
VIE, Primary Beneficiary
Cash and cash equivalents	$ 200,000	$ 100,000
Allowance for doubtful accounts	400,000	300,000
Prepaid expenses and other current assets	100,000	100,000
Property and equipment, net	47,200,000	47,800,000
Other assets	0.0	100,000
Accounts payable	0.0	600,000
Accrued expenses	300,000	100,000
Customer deposits	100,000	0
Long-term debt, current portion	700,000	700,000
Long-term debt, net of current portion	36,300,000	36,700,000
Debt discount	100,000	100,000
Other liabilities	$ 3,000,000.0	$ 3,900,000