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Consolidated Condensed Balance Sheets (Current Period Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 3,494 $ 4,313
Accounts receivable 6,157 1,264
Inventories, net of allowance for excess and obsolete inventory of $1,040 as of June 30, 2023 and December 31, 2022, respectively 7,463 4,658
Prepaid expenses 1,212 4,248
Other current assets 2,582 3,653
Total current assets 20,908 18,136
Property, plant and equipment, net 182,783 180,441
Operating lease right-of-use assets 2,258 2,449
Other assets 6,636 6,088
Total assets 212,585 207,114
Current liabilities:    
Accounts payable 30,306 26,168
Current portion of long term debt 21,458 12,465
Short term borrowings 41,396 36,754
Accrued property taxes 1,522 1,206
Current portion of operating lease liability 372 338
Other current liabilities 9,578 7,268
Total current liabilities 108,921 88,281
Long term liabilities:    
Senior secured notes and revolving notes 163,871 155,843
EB-5 notes 29,500 29,500
Other long term debt 11,528 11,678
Operating lease liability 1,995 2,189
Other long term liabilities 5,991 5,477
Total long term liabilities 342,601 320,687
Stockholders' deficit:    
Common stock, $0.001 par value; 80,000 authorized; 38,178 and 35,869 shares issued and outstanding each period, respectively 38 36
Additional paid-in capital 247,017 232,546
Accumulated deficit (480,674) (428,985)
Accumulated other comprehensive loss (5,319) (5,452)
Total stockholders' deficit (238,937) (201,854)
Total liabilities and stockholders' deficit 212,585 207,114
Series B Convertible Preferred Stock [Member]    
Stockholders' deficit:    
Series B convertible preferred stock, $0.001 par value; 7,235 authorized; 1,260 and 1,270 shares issued and outstanding each period, respectively (aggregate liquidation preference of $3,780 and $3,810 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 4,289 4,082
Long term liabilities:    
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount, Noncurrent $ 129,716 $ 116,000