Comprehensive Income (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign Currency Translation Adjustments, Beginning balance, December 31, 2013			$ (934)
Foreign Currency Translation Adjustments, Other comprehensive income before reclassifications			(665)
Foreign Currency Translation Adjustments, Amounts reclassified from accumulated other comprehensive loss			0
Foreign Currency Translation Adjustments, Net current period other comprehensive income			(665)
Foreign Currency Translation Adjustments, Ending balance, September 30, 2014	(1,599)		(1,599)
Defined Benefit Pension Items, Beginning balance, December 31, 2013			(8,488)
Defined Benefit Pension Items, Other comprehensive income before reclassifications			0
Defined Benefit Pension Items, Amounts reclassified from accumulated other comprehensive loss			323
Defined Benefit Pension Items, Net current period other comprehensive income	107	269	323	770
Defined Benefit Pension Items, Ending balance, September 30, 2014	(8,165)		(8,165)
Beginning balance, December 31, 2013			(9,422)
Other comprehensive income before reclassifications			(665)
Amounts reclassified from accumulated other comprehensive loss			323
Net current period other comprehensive income			(342)
Ending balance, September 30, 2014	$ (9,764)		$ (9,764)