CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities
Net income	$ 34,669	$ 14,169
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	21,399	19,711
Employee benefit plan provisions	1,370	4,468
Stock-based compensation	2,391	2,057
Deferred income tax expense (benefit)	2,877	(1,474)
Restructuring (Note 1)	(129)	7,958
Restructuring cash payments (Note 1)	(3,124)
Changes in assets and liabilities - net of effects from foreign exchange:
(Increase) decrease in receivables	(7,096)	5,657
(Increase) decrease in inventories	(3,289)	6,079
Decrease (increase) in revenue in excess of billings on uncompleted contracts and other current assets	8,177	(7,519)
Decrease in accounts payable, accrued liabilities, and accrued interest	(15,140)	(2,999)
Pension contributions	(3,547)	(3,107)
Other items - net	573	(508)
Net cash provided by operating activities	39,131	44,492
Cash flows from investing activities
Proceeds from sale of business (Note 1)	642
Capital expenditures	(22,053)	(45,674)
Government grants received	1,709	947
Cash released from collateral		1,106
Net cash used in investing activities	(19,702)	(43,621)
Cash flows from financing activities
Proceeds from debt obligations	10,476
Reductions of debt obligations	(1,015)	(2,294)
Treasury stock purchased	(344)	(567)
Common stock issued	3,410	967
Excess tax benefit from stock-based compensation		(268)
Net cash (used in) provided by financing activities	(10,014)	2,493
Effect of exchange rate changes on cash and cash equivalents	2,401	1,722
Increase in cash and cash equivalents	11,816	5,086
Cash and cash equivalents, beginning of period	18,161	13,574
Cash and cash equivalents, end of period	29,977	18,660
Japanese Revolving credit facility
Cash flows from financing activities
Revolving credit facility borrowings short-term and long-term (Note 10)		10,546
Revolving credit facility repayments short-term and long-term (Note 10)	(16,291)	(10,291)
U.S. Revolving credit facility
Cash flows from financing activities
Revolving credit facility borrowings short-term and long-term (Note 10)	64,900	61,200
Revolving credit facility repayments short-term and long-term (Note 10)	$ (71,150)	$ (56,800)