Accumulated Other Comprehensive Income - Schedules of Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at January 1, 2013	$ 27,465
Other comprehensive income before reclassifications	(7,675)
Amounts reclassified from AOCI, net of tax	227
Total other comprehensive income (loss)	(7,448)
Balance at December 31, 2013	20,017
Unrealized Gains on Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at January 1, 2013	275
Other comprehensive income before reclassifications	215
Amounts reclassified from AOCI, net of tax	(61)
Total other comprehensive income (loss)	154
Balance at December 31, 2013	429
Cumulative Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at January 1, 2013	42,158
Other comprehensive income before reclassifications	(11,311)
Amounts reclassified from AOCI, net of tax	0
Total other comprehensive income (loss)	(11,311)
Balance at December 31, 2013	30,847
Unrecognized Net Actuarial Loss and Service Credit
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at January 1, 2013	(14,968)
Other comprehensive income before reclassifications	3,421
Amounts reclassified from AOCI, net of tax	288
Total other comprehensive income (loss)	3,709
Balance at December 31, 2013	$ (11,259)