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Derivative Instruments Derivative Instruments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure	$ 220		$ 220
Accumulated Unrealized Gain (Loss) on Cash Flow Hedging Instruments	156	324	156	324
Derivative Instruments, Gain (Loss) Recognized in Income, Net	$ 26	$ 192	$ 13	$ 0

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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