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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018
Cash flows from operating activities: |  |  |
Net earnings | $ 101,980 | $ 81,039 | $ 92,136
Adjustments to reconcile net earnings to net cash provided by operating activities: |  |  |
Net earnings from discontinued operations, net of tax | (76,515) | (3,550) | (5,875)
Depreciation and amortization | 41,338 | 35,995 | 33,690
Stock compensation expense | 5,550 | 5,088 | 5,029
Changes in assets and liabilities | 23,793 | (6,649) | (9,552)
Change in property, plant and equipment from gain on building sale |  | (8,922) |
Effect of deferred taxes on tax provision | (2,562) | 61 | (21,031)
Pension contributions | (25,650) | (2,500) | (9,951)
Pension plan termination charge | 40,600 |  |
Net cash provided by operating activities - continuing operations | 108,534 | 100,562 | 84,446
Net cash (used) provided by discontinued operations | (26,254) | 4,575 | 8,813
Net cash provided by operating activities | 82,280 | 105,137 | 93,259
Cash flows from investing activities: |  |  |
Acquisition of businesses, net of cash acquired |  | (95,840) | (9,813)
Capital expenditures | (32,108) | (24,229) | (15,243)
Additions to capitalized software | (9,023) | (8,374) | (9,573)
Proceeds from sale of building and land |  | 17,201 |
Net cash used by investing activities - continuing operations | (41,131) | (111,242) | (34,629)
Net cash provided (used) by investing activities - discontinued operations | 182,084 | (13,903) | (6,978)
Net cash provided (used) by investing activities | 140,953 | (125,145) | (41,607)
Cash flows from financing activities: |  |  |
Proceeds from long-term debt | 12,368 | 130,000 | 55,000
Principal payments on long-term debt | (235,000) | (65,000) | (110,000)
Dividends paid | (8,323) | (8,302) | (8,278)
Debt issuance costs |  | (1,071) |
Other | (3,125) | (3,371) | (3,078)
Net cash provided (used) by financing activities - continuing operations | (234,080) | 52,256 | (66,356)
Net cash used by financing activities - discontinued operations | (2,140) | (2,472) | (1,922)
Net cash provided (used) by financing activities | (236,220) | 49,784 | (68,278)
Effect of exchange rate changes on cash and cash equivalents | 3,739 | 1,555 | 1,587
Net increase (decrease) in cash and cash equivalents | (9,248) | 31,331 | (15,039)
Cash and cash equivalents at beginning of year | 61,808 | 30,477 | 45,516
Cash and cash equivalents at end of year | 52,560 | 61,808 | 30,477
Changes in assets and liabilities: |  |  |
Accounts receivable, net | 14,633 | (8,722) | (340)
Contract assets | 13,465 | (57,177) | (5,748)
Inventories | (11,233) | 7,109 | (9,440)
Other assets and liabilities | (6,615) | 7,708 | 1,334
Accounts payable | (13,275) | 10,716 | 7,932
Contract liabilities | 19,374 | 32,142 | (1,999)
Accrued expenses | 7,444 | 1,575 | (1,291)
Changes in assets and liabilities | 23,793 | (6,649) | (9,552)
Supplemental cash flow information: |  |  |
Interest paid | 5,869 | 8,076 | 8,540
Income taxes paid (including state & foreign) | $ 37,714 | $ 26,084 | $ 8,789

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