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CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Allowance for doubtful accounts | $ 140,400,000 | $ 1,260,000
Obsolete inventory | $ 1,040 | $ 0
Common stock, par value | $ 0.001 | $ 0.001
Common stock, shares authorized (in thousands) | 80,000,000 | 80,000
Common stock, shares issued (in thousands) | 33,461,000 | 22,830
Common stock, shares outstanding (in thousands) | 33,461 | 22,830
Prepaid expenses, VIE | $ 5,598,000 | $ 750,000
Other current assets, VIE | 644,000 | 1,551,000
Property, plant and equipment, VIE | 135,101,000 | 109,880,000
Operating lease right-of-use assets, VIE | 2,462,000 | 2,889,000
Other assets, VIE | 2,575,000 | 3,687,000
Accounts payable, VIE | 16,415,000 | 20,739,000
Short term borrowings, VIE | 14,586,000 | 14,541,000
Current portion of operating lease liability, VIE | 260,000 | 316,000
Other current liabilities, VIE | 5,872,000 | 4,524,000
Series A preferred units, VIE | 44,978,000 | 32,022,000
Operating lease liability, VIE | $ 2,578,000 | $ 2,894,000
Series B preferred stock, par value | $ 0.001 |
Series B preferred stock, authorized (in thousands) | 65,000 | 65,000
Series B preferred stock, shares issued (in thousands) | 1,278 | 1,323
Series B preferred stock, shares outstanding (in thousands) | 1,278 | 1,323
Series B Convertible Preferred Stock |  |
Series B preferred stock, par value | $ 0.001 | $ 0.001
Series B preferred stock, authorized (in thousands) | 7,235,000 | 7,235
Series B preferred stock, shares issued (in thousands) | 1,275,000 | 1,323
Series B preferred stock, shares outstanding (in thousands) | 1,275 | 1,323
Aggregate liquidation preference | $ 3,825,000 | $ 3,969
Variable Interests Entity Primary Beneficiary [Member] |  |
Cash and cash equivalents, VIE | 19,000 | 235,000
Prepaid expenses, VIE | 335,000 | 192,000
Other current assets, VIE | 0 | 741,000
Property, plant and equipment, VIE | 39,625,000 | 22,628,000
Operating lease right-of-use assets, VIE | 10,000 | 28,000
Other assets, VIE | 38,000 | 24,000
Accounts payable, VIE | 4,950,000 | 6,271,000
Short term borrowings, VIE | 9 | 0
Accrued property taxes, VIE | 121 | 0
Current portion of operating lease liability, VIE | 11,000 | 10,000
Other current liabilities, VIE | 306,000 | 129,000
Other long term debt, VIE | 40,000 | 0
Series A preferred units, VIE | 44,978,000 | 32,022,000
Operating lease liability, VIE | 0 | 11,000
Other long term liabilities, VIE | 0 | 74,000
Current portion of Series A preferred units, VIE | $ 3,169,000 | $ 2,015,000

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