Comprehensive Income (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign Currency Translation Adjustments, Beginning balance, December 31, 2014	$ (2,894)
Foreign Currency Translation Adjustments, Other comprehensive loss before reclassifications	(1,337)
Foreign Currency Translation Adjustments, Amounts reclassified from accumulated other comprehensive loss	0
Foreign Currency Translation Adjustments, Net current period other comprehensive (loss) income	(1,337)
Foreign Currency Translation Adjustments, Ending balance, March 31, 2015	(4,231)
Defined Benefit Pension Items, Beginning balance, December 31, 2014	(15,136)
Defined Benefit Pension Items, Other comprehensive loss before reclassifications	0
Defined Benefit Pension Items, Amounts reclassified from accumulated other comprehensive loss	271	120
Defined Benefit Pension Items, Net current period other comprehensive (loss) income	271
Defined Benefit Pension Items, Ending balance, March 31, 2015	(14,865)
Beginning balance, December 31, 2014	(18,030)
Other comprehensive loss before reclassifications	(1,337)
Amounts reclassified from accumulated other comprehensive loss	271
Net current period other comprehensive (loss) income	(1,066)
Ending balance, March 31, 2015	$ (19,096)

The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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