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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Cash Flows from Operating Activities |  |
Net income (loss) | $ (36,500,000) | $ (51,100,000)
Adjustments to reconcile net income (loss) to net cash (used in) operating activities: |  |
Depreciation and amortization | 2,600,000 | 3,300,000
Interest on paid-in-kind toggle notes | 700,000 | 900,000
Gain on sale of assets | (500,000) | (300,000)
Inventory valuation adjustments | 2,300,000.0 | 0
Changes in operating assets and liabilities: |  |
Accounts receivable – (increase) decrease | 24,600,000 | 32,100,000
Inventories, net – (increase) decrease | (6,600,000) | 20,400,000
Payables under SWU purchase agreements – increase (decrease) | (31,100,000) | (59,900,000)
Deferred revenue, net of deferred costs – increase (decrease) | 27,000,000 | 9,800,000
Accounts payable and other liabilities – increase (decrease) | (15,800,000) | (12,500,000)
Pension and postretirement liabilities - increase (decrease) | (11,100,000) | (9,000,000)
Other, net | (700,000) | 600,000
Net Cash (Used in) Operating Activities | (45,100,000) | (65,700,000)
Cash Flows Provided by Investing Activities |  |
Capital expenditures | 0 | (100,000)
Proceeds from sales of assets | 500,000 | 300,000
Net Cash Provided by (Used in) Investing Activities | 500,000 | 200,000
Cash Flows Used in Financing Activities |  |
Payment of interest classified as debt | (3,100,000) | (3,000,000)
Net Cash (Used in) Financing Activities | (3,100,000) | (3,000,000)
Decrease in cash, cash equivalents and restricted cash | (47,700,000) | (68,500,000)
Cash, cash equivalents and restricted cash, start of period | 159,700,000 | 244,800,000
Cash, cash equivalents and restricted cash, end of period | 112,000,000 | 176,300,000
Supplemental Cash Flow Information: |  |
Interest paid | 400,000 | 400,000
Conversion of interest payable-in-kind to long-term debt | $ 700,000 | $ 900,000

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