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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 4,313 $ 7,751
Accounts receivable, net of allowance for doubtful accounts 1,264 1,574
Inventories, net of allowance for excess and obsolete inventory of $1,040 as of December 31, 2022 and 2021 4,658 5,126
Prepaid expenses 4,248 5,598
Other current assets 3,653 644
Total current assets 18,136 20,693
Property, plant and equipment, net 180,441 135,101
Operating lease right-of-use assets 2,449 2,462
Other assets 6,088 2,575
Total assets 207,114 160,831
Current liabilities:    
Accounts payable 26,168 16,415
Current portion of long term debt 12,465 8,192
Short term borrowings 36,754 14,586
Accrued property taxes 1,206 6,830
Accrued contingent litigation fees 0 6,200
Current portion of operating lease liability 338 260
Other current liabilities 7,268 5,872
Total current liabilities 88,281 65,330
Long term liabilities:    
Senior secured notes and revolving notes 155,843 121,451
EB-5 notes 29,500 32,500
Other long term debt 11,678 12,038
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount, Noncurrent 116,000 45,000
Operating lease liability 2,189 2,318
Other long term liabilities 5,477 2,454
Total long term liabilities 320,687 215,739
Stockholders' deficit:    
Common stock, $0.001 par value; 80,000 authorized; 35,869 and 33,461 shares issued and outstanding each period, respectively 36 33
Additional paid-in capital 232,546 205,305
Accumulated deficit (428,985) (321,227)
Accumulated other comprehensive loss (5,452) (4,350)
Total stockholders' deficit (201,854) (120,238)
Total liabilities and stockholders' deficit 207,114 160,831
Series B Convertible Preferred Stock [Member]    
Stockholders' deficit:    
Series B convertible preferred stock, $0.001 par value; 7,235 authorized; 1,270 and 1,275 shares issued and outstanding each period, respectively (aggregate liquidation preference of $3,810 and $3,825 respectively) 1 1
Convertible Series B Preferred Stock Subject to Mandatory Redemption [Member]    
Current liabilities:    
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount, Current 4,082 3,806
Long term liabilities:    
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount, Noncurrent 116,000 44,978
Convertible Series A Preferred Stock Subject to Mandatory Redemption [Member]    
Current liabilities:    
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount, Current $ 0 $ 3,169