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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities: |  |  |
Net earnings |  | $ 53,373 | $ 49,120
Adjustments to reconcile net earnings to net cash provided by operating activities: |  |  |
Depreciation and amortization |  | 32,451 | 38,642
Impairment of assets held for sale |  | 37,902 |
Net loss (gain) on sales of assets | [1] | (13,547) | 79
Stock-based compensation |  | 10,982 | 10,851
Deferred income taxes |  | (47) | (4,181)
Changes in operating assets and liabilities: |  |  |
Trade accounts receivable |  | 37,652 | 52,851
Unbilled receivables (contract assets) |  | (33,150) | (4,705)
Costs to fulfill a contract |  | (6,401) | (7,293)
Inventories |  | (17,065) | (32,393)
Accounts payable and accrued liabilities |  | (79,535) | (38,145)
Contract liabilities |  | (144) | 10,050
Income taxes |  | 1,001 | 8,581
Retirement benefit obligations |  | (1,490) | (926)
Other |  | 5,463 | 2,181
Net cash provided by operating activities |  | 27,445 | 84,712
Cash flows from investing activities: |  |  |
Payments for purchase of property, plant, and equipment |  | (17,232) | (31,346)
Proceeds from sale of assets |  | 18,809 | 249
Proceeds from sales of short-term investments |  |  | 27
Payments for purchases of short-term investments |  | (2) | (947)
Net cash provided by (used in) investing activities |  | 1,575 | (32,017)
Cash flows from financing activities: |  |  |
Cash dividends paid |  | (10,064) | (8,808)
Proceeds from sales of treasury stock |  | 7,558 | 3,384
Borrowings on revolving lines of credit and short-term borrowings |  | 461,633 | 542,847
Payments on revolving lines of credit and short-term borrowings |  | (441,500) | (501,218)
Payments of long-term debt and finance lease obligations |  | (439) | (100,132)
Net cash provided by (used in) financing activities |  | 17,188 | (63,927)
Effect of exchange rate changes on cash and cash equivalents |  | 2,727 | (728)
Net change in cash and cash equivalents |  | 48,935 | (11,960)
Cash and cash equivalents, including restricted cash, at beginning of year |  | 99,073 | 83,594
Cash and cash equivalents, including restricted cash, at end of year |  | $ 148,008 | $ 71,634
[1] | Included in net (gain) loss on sale of assets for the first quarter of fiscal year 2020 was the pre-tax gain on sale of Duarte real property in the amount of $13,522.

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- Definition Amount of cash outflow for debt, mandatory redeemable security, and principal payment for finance lease obligation. + 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 (a),(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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- Definition Increase Decrease In Costs To Fulfill A Contract + References No definition available. + Details
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