CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 11,822,000	$ 32,756,000
Restricted cash	6,251,000	6,251,000
Investments	46,210,000	51,330,000
Accounts receivable, net of allowance for doubtful accounts of $595 and $276, respectively	20,370,000	18,158,000
Inventory	19,222,000	16,693,000
Prepaid expenses and other	2,900,000	1,861,000
Total current assets	106,775,000	127,049,000
Property and equipment, net	70,988,000	62,923,000
Operating lease right-of-use assets	14,975,000	15,193,000
Intangible assets, net	3,346,000	2,859,000
Total assets	196,084,000	208,024,000
Current liabilities:
Accounts payable and accrued expenses	21,838,000	22,459,000
Current maturities of long-term lease obligations	1,762,000	1,834,000
Total current liabilities	23,600,000	24,293,000
Long-term debt, net of debt discount and financing fees	45,263,000	44,821,000
Long-term lease obligations	20,655,000	20,798,000
Debt derivative liabilities	4,876,000	5,562,000
Total liabilities	94,394,000	95,474,000
Commitments and contingencies - see Note 12
Shareholders’ equity:
Common stock, $0.01 par value per share; 100,000,000 shares authorized; 42,134,504 and 41,736,950 shares issued and outstanding	420,000	417,000
Additional paid-in capital	351,117,000	342,765,000
Accumulated deficit	(249,847,000)	(230,632,000)
Total shareholders’ equity	101,690,000	112,550,000
Total liabilities and shareholders’ equity	$ 196,084,000	$ 208,024,000