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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
Operating Activities: |  |  |
Net income | $ 15,510 | $ 9,439 | $ 29,224
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 12,979 | 13,120 | 11,386
Amortization | 352 | 435 | 779
Gain on sale of discontinued operations, net of tax |  |  | (8,563)
Stock-based compensation | 4,883 | 3,171 | 3,385
Excess tax benefit from stock-based compensation | 387 | 191 | (407)
Bad debt expense/(recovery) | 187 | (29) | 1,074
Deferred income tax expense (benefit) | 2,330 | 10,521 | (3,212)
Gain on amended supply agreement | (2,029) | (2,029) | (1,522)
Cash received from amended supply agreement | 2,333 | 2,333 | 10,000
Changes in operating assets and liabilities: |  |  |
Accounts receivable, net | 369 | 391 | 1,959
Costs and billings in excess of estimates on uncompleted contracts | 39,612 | (17,430) | (17,089)
Inventories | 6,159 | (572) | (3,959)
Prepaid expenses and other current assets | 1,342 | 2,656 | (1,101)
Accounts payable and income taxes payable | (12,334) | (5,073) | 1,002
Accrued liabilities | 3,927 | (3,373) | (4,997)
Other, net | (1,101) | (833) | 1,524
Net assets held for sale |  |  | (10,355)
Net cash provided by operating activities | 74,906 | 12,918 | 9,128
Investing Activities: |  |  |
Proceeds from sale of property, plant and equipment | 187 | 112 | 118
Proceeds from sale of Transdyn |  |  | 14,819
Purchases of property, plant and equipment | (3,044) | (34,719) | (16,495)
Net cash used in investing activities | (2,857) | (34,607) | (1,558)
Financing Activities: |  |  |
Payments on industrial development revenue bonds | (400) | (400) | (400)
Excess tax benefit from stock-based compensation | (387) | (191) | 407
Shares withheld in lieu of employee tax withholding | (1,000) | (740) | (499)
Purchase of treasury shares | (3,740) | (21,259) |
Dividends paid | (11,845) | (12,358) | (11,998)
Payments on short-term and other financing |  |  | (16)
Net cash used in financing activities | (17,372) | (34,948) | (12,506)
Net increase (decrease) in cash and cash equivalents | 54,677 | (56,637) | (4,936)
Effect of exchange rate changes on cash and cash equivalents | (526) | (2,912) | 643
Cash and cash equivalents, beginning of period | 43,569 | 103,118 | 107,411
Cash and cash equivalents, end of period | $ 97,720 | $ 43,569 | $ 103,118

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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- Definition This element represents the cash inflow during the period from the sale of a component of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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