CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities
Net income	$ 6,628	$ 13,354
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	23,788	18,236
Employee benefit plan provisions	1,523	2,090
Stock-based compensation	2,292	2,196
Deferred income tax (benefit) expense	(1,704)	(1,349)
Changes in assets and liabilities — net of effects from foreign exchange:
Receivables	(3,668)	2,020
Inventories	(10,583)	(11,176)
Revenue in excess of billings on uncompleted contracts and other current assets	(10,971)	5,004
Accounts payable and other accrued liabilities	4,303	1,646
Pension contributions	(1,229)	(711)
Other items - net	(759)	(441)
Net cash provided by operating activities	9,620	30,869
Cash flows from investing activities
Purchase of business - net of cash (Note 15)	(1,233)
Capital expenditures	(29,898)	(16,892)
Proceeds from sale of assets		1,234
Net cash used in investing activities	(31,131)	(15,658)
Cash flows from financing activities
Credit agreement borrowings — long-term	76,456	58,334
Credit agreement repayments — long-term	(55,130)	(57,283)
Repayment of Japanese term loan - long-term		(4,001)
Treasury stock purchased	(354)	(8,644)
Common stock dividends paid	(5,093)	(5,066)
Proceeds from the exercise of stock options	147	163
Other financing	(10,916)
Net cash provided by (used in) financing activities	5,110	(16,497)
Effect of exchange rate changes on cash and cash equivalents	2,496	(1,103)
Net decrease in cash and cash equivalents	(13,905)	(2,389)
Cash and cash equivalents, beginning of period	37,984	53,629
Cash and cash equivalents, end of period	$ 24,079	$ 51,240