Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended					9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2013 Accumulated Short-term Investment Transactions [Member]	Sep. 30, 2014 Accumulated Short-term Investment Transactions [Member]	Dec. 31, 2013 Accumulated Short-term Investment Transactions [Member]	Sep. 30, 2014 Accumulated Currency Translation [Member]	Sep. 30, 2013 Accumulated Currency Translation [Member]	Sep. 30, 2014 Accumulated Postretirement Transactions [Member]		Sep. 30, 2013 Accumulated Postretirement Transactions [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (1,494)	$ (387)	$ 1,213	$ 0	$ 0	$ 760	$ 1,562	$ (2,254)		$ (3,162)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	64	60
Other Comprehensive Income (Loss), Available-for-sale Securities, before Reclassification Adjustments, Tax	0	51
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	0	702
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			93			(632)	(396)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(1,306)					101	[1]	140	[1]
Ending Balance	$ (2,025)	$ (1,856)	$ 0	$ 0	$ 0	$ 128	$ 1,166	$ (2,153)		$ (3,022)

[1] (1)—These accumulated other comprehensive income components relate to amortization of actuarial loss/(gain) and prior period service costs/(benefits) and are included in the computation of net periodic costs for our pension and postretirement plans. See Note 12 for further details and pre-tax amounts.