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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
Cash flows from operating activities: |  |
Net income | $ 53,150 | $ 42,561
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 50,810 | 49,278
Stock-based compensation expense | 11,854 | 7,940
Change in deferred taxes | (3,602) | (995)
Gain on sale of assets | (332) | (176)
Unrealized gain on investments | (1,953) | (819)
Changes in working capital items | (2,908) | 6,585
Increase in other assets | (11,227) | (4,443)
Decrease in other liabilities | (5,012) | (1,573)
Increase in pension and postretirement benefits | 6,115 | 9,778
Other operating activities, net | (1,133) | (9,731)
Net cash provided by operating activities | 95,762 | 98,405
Cash flows from investing activities: |  |
Capital expenditures | (32,215) | (32,697)
Acquisitions, net of cash acquired | (96,320) | (6,936)
Proceeds from sale of assets | 1,515 | 1,344
Other investing activities, net | (681) | 0
Net cash used in investing activities | (127,701) | (38,289)
Cash flows from financing activities: |  |
Proceeds from long-term debt | 372,768 | 77,713
Payments on long-term debt | (311,718) | (61,295)
Proceeds from the exercise of stock options | 14 | 5,181
Purchases of treasury stock | (11,651) | (57,903)
Dividends | (16,193) | (14,375)
Transactions with noncontrolling interests | 0 | (4,228)
Other financing activities | 0 | (2,318)
Net cash provided by (used in) financing activities | 33,220 | (57,225)
Effect of exchange rate changes on cash | (240) | (604)
Net change in cash and cash equivalents | $ 1,041 | $ 2,287

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- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906 + Details
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