Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended			6 Months Ended				6 Months Ended			6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2013 Accumulated Short-term Investment Transactions [Member]	Jun. 30, 2014 Accumulated Short-term Investment Transactions [Member]	Dec. 31, 2013 Accumulated Short-term Investment Transactions [Member]	Mar. 31, 2013 Accumulated Short-term Investment Transactions [Member]	Jun. 30, 2014 Accumulated Currency Translation [Member]	Jun. 30, 2013 Accumulated Currency Translation [Member]	Mar. 31, 2013 Accumulated Currency Translation [Member]	Jun. 30, 2014 Accumulated Postretirement Transactions [Member]		Jun. 30, 2013 Accumulated Postretirement Transactions [Member]		Mar. 31, 2013 Accumulated Postretirement Transactions [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (1,494)	$ (387)	$ (2,164)	$ 1,213	$ 0	$ 0	$ 0	$ 760	$ 1,562	$ 904	$ (2,254)		$ (3,162)		$ (3,068)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	42	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				(42)	(658)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				(1,306)							67	[1]	94	[1]
Ending Balance	$ (1,469)		$ (2,164)		$ 0	$ 0	$ 0	$ 718		$ 904	$ (2,187)				$ (3,068)

[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 11 for further details and pre-tax amounts.