Derivatives and Other Financial Instruments - Narrative (Details) (USD $)	3 Months Ended		6 Months Ended	12 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Foreign Exchange Forward Contracts [Member]	Jun. 30, 2013 Foreign Exchange Forward Contracts [Member]	Jun. 30, 2014 Net Investment Hedging [Member]	Dec. 31, 2013 Net Investment Hedging [Member]
Derivative [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 16,834,000		$ 16,834,000	$ 16,362,000			$ 2,148,000	$ 2,304,000
Cumulative net after-tax gain related to net investment hedges				2,300,000
Net after-tax unrealized gain included in accumulated AOCI expected to be transferred				(100,000)
Amount of Loss Recognized in AOCI on Derivative (Effective Portion)					16,000	74,000
Gain (loss) on fair value hedge derivatives	$ (100,000)	$ 400,000	$ (200,000)