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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2012
Cash flows from operating activities: |  |  |
Net income (loss) | $ 12,132 | $ (8,462) | $ (26,576)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Depreciation and amortization | 27,334 | 32,542 | 32,113
Provision for (recovery of) doubtful accounts | 80 | (757) | (980)
Deferred income taxes | 137 | 74 | (78)
Impairment losses on goodwill and intangible assets | 0 | 92 | 5,585
Net gains from sales of assets | (3,814) | (4,467) | (268)
ESOP and share-based compensation expense | 4,692 | 3,563 | 3,287
Net (gains) losses on derivative instruments and investments | (4,276) | 11,132 | 6,175
Change in operating assets and liabilities: |  |  |
Restricted cash | 8,084 | (6,472) | (1,153)
Purchases of trading securities held for investment | (5,915) | (9,049) | (13,576)
Proceeds from sales of trading securities held for investment | 4,290 | 7,633 | 18,267
Accounts and notes receivable | 2,248 | (2,429) | 3,745
Inventories | (14,439) | 5,115 | 13,236
Income tax receivable | 181 | 353 | (314)
Derivative assets, net | 3,932 | 0 | 0
Prepaid expenses and other assets | (661) | (156) | (860)
Accounts payable | 17,526 | 1,773 | (13,441)
Accrued payroll expenses and other current liabilities | 2,574 | (8,785) | (4,239)
Accrued postretirement benefits | (1,905) | (6,451) | 3,530
Other long-term liabilities | 695 | 6,678 | (6,320)
Net cash provided by operating activities | 52,895 | 21,927 | 18,133
Cash flows from investing activities: |  |  |
Purchases of property, plant and equipment | (25,267) | (15,894) | (17,498)
Proceeds from sales of property, plant and equipment | 4,536 | 5,666 | 3,037
Net cash used in investing activities | (20,731) | (10,228) | (14,461)
Cash flows from financing activities: |  |  |
Proceeds from revolving credit facility | 44,806 | 43,990 | 17,250
Repayments on revolving credit facility | (65,454) | (54,761) | (21,200)
Payments of capital lease obligations | (3,681) | (3,359) | (1,897)
Proceeds from stock option exercises | 1,480 | 1,203 | 0
Net cash used in financing activities | (22,849) | (12,927) | (5,847)
Net increase (decrease) in cash and cash equivalents | 9,315 | (1,228) | (2,175)
Cash and cash equivalents at beginning of year | 2,678 | 3,906 | 6,081
Cash and cash equivalents at end of year | 11,993 | 2,678 | 3,906
Supplemental disclosure of cash flow information: |  |  |
Cash paid for interest | 1,258 | 1,783 | 2,123
Cash paid for income taxes | 361 | 370 | 317
Supplemental disclosure of non-cash investing activities: |  |  |
Equipment acquired under capital leases | 1,217 | 626 | 9,508
Net change in derivative assets and liabilities included in other comprehensive income | 17,524 | (7,921) | 0
Non-cash additions to equipment | $ 142 | $ 0 | $ 0

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