Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 72us-gaap_NetIncomeLoss	$ 78us-gaap_NetIncomeLoss
Adjustments for changes in:
Foreign currency translation	(3,741)	548
Unrecognized employee benefit costs (including effects of foreign currency translation)	5,453	(126)
Unrealized holding gains on marketable securities	4	49
Fair value of cash flow hedges	(85)	(208)
Reclassification adjustments for items included in net income:
Amortization of unrecognized employee benefit costs	1,874	957
Realized gains on sale of marketable securities	0	(18)
Realized losses from settlement of cash flow hedges	115	18
Other comprehensive income	3,620	1,220
Comprehensive income	$ 3,692us-gaap_ComprehensiveIncomeNetOfTax	$ 1,298us-gaap_ComprehensiveIncomeNetOfTax

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