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15. Parent Company Financial Statements (Details 2) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Operating activities:    
Net loss $ (39,477) $ (36,287)
Adjustments to reconcile net loss to net cash provided by (used in) operating activitites:    
Stock-based compensation 774 981
Stock issued for services 0 22
Depreciation 4,434 4,580
Changes in operating assets and liabilities:    
Prepaid expenses 147 1,692
Accounts payable 1,001 2,207
Accrued interest expense 18,033 12,463
Other liabilities 7,088 425
Net cash used in operating activities (2,034) (5,506)
Investing activities:    
Net cash used in investing activities (8,578) (4,074)
Financing activities:    
Net cash (used)/provided by financing activities 10,085 10,391
Net increase (decrease) in cash and cash equivalents (532) 760
Cash and cash equivalents at beginning of period 1,188 428
Cash and cash equivalents at end of period 656 1,188
Supplemental disclosures of cash flow information, cash paid:    
Interest payments 2,476 5,590
Income tax expense 8 6
Supplemental disclosures of cash flow information, non-cash transactions:    
Fair value of warrants issued to subordinated debt holders 162 235
Stock Appreciation Rights issued for GAFI Amendment No. 1 0 1,277
Parent Company Financial Statements    
Operating activities:    
Net loss (35,716) 33,016
Adjustments to reconcile net loss to net cash provided by (used in) operating activitites:    
Stock-based compensation 774 981
Stock issued for services 0 22
SARs Amortization 800 477
Depreciation 8 8
Subsidiary portion of net losses 21,745 29,009
Change in fair value of SARs liability (82) (145)
Changes in operating assets and liabilities:    
Prepaid expenses 74 (113)
Accounts payable 71 1,459
Accrued interest expense 1,184 209
Other liabilities 5,891 275
Other assets (232) 0
Net cash used in operating activities (5,483) (834)
Investing activities:    
Subsidiary advances, net 6,781 2,119
Net cash used in investing activities 6,781 2,119
Financing activities:    
Proceeds from borrowings under secured debt facilities 0 1,500
Repayments of borrowings under secured debt facilities (1,298) (2,814)
Net cash (used)/provided by financing activities (1,298) (1,314)
Net increase (decrease) in cash and cash equivalents 0 (29)
Cash and cash equivalents at beginning of period 0 29
Cash and cash equivalents at end of period 0 0
Supplemental disclosures of cash flow information, cash paid:    
Interest payments 0 0
Income tax expense 8 7
Supplemental disclosures of cash flow information, non-cash transactions:    
Fair value of warrants issued to subordinated debt holders 162 235
Exercise of stock appreciation rights added to GAFI debt 1,050 0
Stock Appreciation Rights issued for GAFI Amendment No. 1 0 1,277
Reclassification of GAFI Noncontrolling interest $ 8,501 $ 0