Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income
Balance at the beginning of the period	$ 435
Foreign currency translation adjustment, net of tax of $(194)	(346)	(192)
Equity interest in investee's unrealized gain on investments	45	19
Other comprehensive income (loss), net of tax	(301)	(173)
Balance at the end of the period	134
Foreign currency translation adjustment, taxes	(194)	(90)
Foreign currency translation adjustment
Accumulated Other Comprehensive Income
Balance at the beginning of the period	385
Foreign currency translation adjustment, net of tax of $(194)	(346)
Other comprehensive income (loss), net of tax	(346)
Balance at the end of the period	39
Equity interest in investee's unrealized gain (loss) on investments
Accumulated Other Comprehensive Income
Balance at the beginning of the period	50
Equity interest in investee's unrealized gain on investments	45
Other comprehensive income (loss), net of tax	45
Balance at the end of the period	$ 95

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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