Significant Accounting Policies Significant Accounting Policies (Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income [Abstract]
Cumulative foreign currency translation adjustments	$ 9,722	$ 8,338
Translation adjustment recorded as divestiture of business	(9,722)	0
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(428)	(277)
Pension and postemployment benefits	(2,392)	(1,029)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (2,820)	$ 7,032