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CONSOLIDATED STATEMENTS OF CASH FLOWS - 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 used in operating activities: |  |
Share-based compensation | 774 | 981
Stock issued for services | 0 | 22
Depreciation | 4,434 | 4,580
Debt related fees and amortization expense | 4,666 | 7,520
Intangibles and other amortization expense | 48 | 140
Accretion of Series A preferred units | 2,257 | 44
Deferred tax expense | 1,123 | 0
Loss on sale/disposal of assets | 0 | 9
Impairment loss on intangible assets | 0 | 865
Change in fair value of stock appreciation rights | (80) | (145)
Changes in operating assets and liabilities: |  |
Accounts receivable | (963) | 1,079
Inventories | (491) | (721)
Prepaid expenses | 147 | 1,692
Other assets | (594) | (380)
Accounts payable | 1,001 | 2,207
Accrued interest expense and fees | 18,033 | 12,463
Other liabilities | 7,088 | 425
Net cash used in operating activities | (2,034) | (5,506)
Investing activities: |  |
Capital expenditures | (8,578) | (4,074)
Net cash used in investing activities | (8,578) | (4,074)
Financing activities: |  |
Proceeds from borrowings | 54,834 | 20,071
Repayments of borrowings | (51,714) | (18,010)
GAFI proceeds from borrowings | 1,480 | 3,144
GAFI repayments of borrowings | (164) | (1,775)
GAFI renewal fee payment | (530) | 0
Grant proceeds received for capital expenditures | 1,364 | 0
Proceeds from Series A preferred units financing | 4,815 | 6,961
Net cash provided by financing activities | 10,085 | 10,391
Effect of exchange rate changes on cash and cash equivalents | (5) | (51)
Net cash and cash equivalents increase (decrease) for period | (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: |  |
Cash paid for interest, net of capitalized interest of $316 thousand and $135 for years ended December 31, 2019 and 2018, respectively | 2,476 | 5,590
Income taxes paid | 8 | 6
Supplemental disclosures of cash flow information, non-cash transactions: |  |
Subordinated debt extension fees added to debt | 680 | 680
Fair value of warrants issued to subordinated debt holders | 162 | 235
TEC debt extension, waiver fees, promissory notes fees added to debt | 1,602 | 4,255
Capital expenditures in accounts payable | 2,391 | 905
Operating lease liabilities arising from obtaining right of use assets | 1,181 | 0
Exercise of stock appreciation rights added to GAFI debt | 1,050 | 0
Debt exchanged for prepaid interest on GAFI Term loan | 0 | 200
GAFI Amendment No. 1 & 2 fees added to debt | 0 | 250
Stock Appreciation Rights issued for GAFI Amendment No. 1 | $ 0 | $ 1,277

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