CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income (loss):	$ 1,172	$ (3,262)
Available-for-sale securities:
Changes in unrealized gains	363	1,167
Reclassification adjustments for gains included in net income (loss)	(163)	(71)
Net change	200	1,096
Cash flow hedges:
Changes in unrealized gains	176	523
Reclassification adjustments for (gains) losses included in net income (loss)	(141)	39
Net change	35	562
Change in unrealized components of defined benefit plans:
Amortization of actuarial loss and prior service benefit	3
Net change	3
Foreign currency translation adjustments, net	(36)	22
Net current period other comprehensive income, Total	202	1,680
Comprehensive income (loss)	$ 1,374	$ (1,582)