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CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Operating Activities: |  |  |
Consolidated net loss | $ (51,524) |  | $ (33,405)
Adjustments to reconcile consolidated net loss to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization of intangibles | 35,944 |  | 30,635
Deferred income taxes |  |  | (563)
Amortization of debt discount | 539 |  | 539
Amortization of deferred financing fees | 566 |  | 754
Non-cash compensation | 2,103 |  | 2,579
(Gain) loss on derivative instruments | (1,565) |  | 4,362
Bad debt expense | 27 |  | 44
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (370) |  | 12,656
Inventories | (4,689) |  | 6,784
Prepaid expenses and other assets | 5,836 |  | (2,454)
Prepaid inventory | (101) |  | 1,839
Operating leases | (7,646) |  |
Accounts payable and accrued expenses | (6,323) |  | 2,307
Net cash provided by (used in) operating activities | (27,203) |  | 26,077
Investing Activities: |  |  |
Additions to property and equipment | (2,144) |  | (10,874)
Net cash used in investing activities | (2,144) |  | (10,874)
Financing Activities: |  |  |
Net proceeds from Kinergy's line of credit | 22,629 |  | 9,880
Proceeds from issuance of common stock | 3,670 |  |
Proceeds from CoGen contract amendment | 8,036 |  |
Proceeds from assessment financing |  |  | 728
Principal payments on borrowings | (11,748) |  | (17,500)
Payments on capital leases |  |  | (761)
Preferred stock dividends paid | (946) |  | (946)
Net cash provided by (used in) financing activities | 21,641 |  | (8,599)
Net change in cash and cash equivalents | (7,706) |  | 6,604
Cash and cash equivalents at beginning of period | 26,627 | [1] | 49,489
Cash and cash equivalents at end of period | 18,921 |  | 56,093
Supplemental Cash Flow Information: |  |  |
Interest paid | 13,877 |  | 11,299
Income tax refunds received |  |  | 743
Noncash financing and investing activities: |  |  |
Initial right of use assets and liabilities recorded under ASC 842 | $ 43,753 |  |
[1] | Amounts derived from the audited consolidated financial statements for the year ended December 31, 2018.

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- Definition Amount of cash outflow for short-term and long-term debt and lease obligation. + References No definition available. + Details
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- Definition The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- References No definition available. + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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