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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Cash flows from operating activities      
Net income $ 13,797 $ 43,463 $ 49,370
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 38,070 35,453 30,470
Employee benefit plan provisions 4,376 2,044 1,186
Stock-based compensation 4,058 3,761 3,748
Deferred income tax (benefit) expense (5,392) 6,782 9,213
Changes in assets and liabilities — net of effects from foreign exchange:      
Receivables (3,665) (4,751) (3,137)
Inventories 3,692 (14,805) 7,907
Revenue in excess of billings on uncompleted contracts and other current assets 5,302 53 (5,503)
Accounts payable and other accrued liabilities 11,247 1,112 (4,103)
Pension contributions (2,426) (3,056) (3,505)
Other items - net (87) (175) (1,298)
Net cash provided by operating activities 68,972 69,881 84,348
Cash flows from investing activities      
Proceeds from sale of assets 1,234   451
Purchase of business - net of cash (Note 20) (153,599)    
Capital expenditures (31,870) (62,264) (63,459)
Government grants received     1,209
Net cash used in investing activities (184,235) (62,264) (61,799)
Cash flows from financing activities      
Japanese working capital loan borrowings — short-term   1,643 3,330
Japanese working capital loan repayments — short-term   (2,490) (4,301)
Credit agreement borrowings — long-term 328,249 111,400 97,200
Credit agreement repayments — long-term (210,650) (70,400) (56,750)
Repayment of term loan- long term (4,002)    
Reductions of debt obligations     (1,880)
Treasury stock purchased (8,655) (35,634) (40,190)
Common stock dividends paid (10,138) (10,430)  
Proceeds from the exercise of stock options 286 1,095 2,199
Other financing 5,709    
Net cash provided by (used in) financing activities 100,799 (4,816) (392)
Effect of exchange rate changes on cash and cash equivalents (1,181) (2,305) (1,966)
Net (decrease) increase in cash and cash equivalents (15,645) 496 20,191
Cash and cash equivalents, beginning of period 53,629 53,133 32,942
Cash and cash equivalents, end of period $ 37,984 $ 53,629 $ 53,133