Derivative Instruments (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Derivative Instruments
Accumulated OCI derivative gain at beginning of period	$ (75)
Effective portion of changes in fair value	(1,032)
Reclassifications from accumulated OCI derivative loss to earnings	(44)
Foreign currency translation	87
Accumulated OCI derivative gain loss at end of period	$ (1,064)

Amount before tax and reclassification adjustments, resulting from the process of expressing in the reporting currency of the reporting entity those amounts that are denominated or measured in a different currency, and from transactions whose terms are denominated in a currency other than the entity's functional currency.

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+ Details

- Definition

Before tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income.

+ References

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+ Details

- Definition

Before tax amount of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References

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+ Details