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Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Jun. 30, 2013 | Jun. 30, 2012
Operating Activities: |  |
Net income | $ 23,508 | $ 17,804
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation | 6,523 | 7,703
Amortization | 1,252 | 2,121
Stock-based compensation | 3,247 | 894
Bad debt expense (recoveries) | (310) | 509
Deferred income taxes | (287) | (273)
Changes in operating assets and liabilities: |  |
Accounts receivable, net | 12,777 | 2,071
Costs and estimated earnings in excess of billings on uncompleted contracts | 12,372 | (35,423)
Inventories | 1,976 | (3,961)
Income tax receivable, prepaid expenses and other current assets | (2,216) | 7,109
Accounts payable and income taxes payable | 6,763 | (1,257)
Accrued liabilities | (6,035) | 490
Billings in excess of costs and estimated earnings on uncompleted contracts | 30,320 | 8,880
Other | (1,224) | (208)
Net cash provided by operating activities | 88,666 | 6,459
Investing Activities: |  |
Proceeds from sale of property, plant and equipment | 711 | 158
Purchases of property, plant and equipment | (53,728) | (25,546)
Decrease in cash held in escrow |  | 1,000
Net cash used in investing activities | (53,017) | (24,388)
Financing Activities: |  |
Borrowings on Canadian revolving line of credit | 4,583 | 7,992
Payments on Canadian revolving line of credit | (4,583) | (7,992)
Payments on industrial development revenue bonds | (400) | (400)
Short-term financing and other | (316) | 1,822
Net cash (used in) provided by financing activities | (716) | 1,422
Net increase in cash and cash equivalents | 34,933 | (16,507)
Effect of exchange rate changes on cash and cash equivalents | (108) | (124)
Cash and cash equivalents, beginning of period | 90,040 | 123,466
Cash and cash equivalents, end of period | $ 124,865 | $ 106,835

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