Goodwill and Intangible Assets, Net (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Changes in the carrying amount of goodwill
Balance at the beginning of the period			$ 121,981
Acquisitions			2,606
Reclassifications			(696)
Foreign exchange			(1,213)
Balance at the end of the period	122,678	127,983	122,678	127,983
Changes in the carrying amount of intangible assets
Balance at the beginning of the period			50,598
Acquisitions	1,869		1,869
Reclassifications			(4,369)
Amortization	(2,000)	(1,900)	(4,013)	(3,700)
Foreign exchange			(739)
Balance at the end of the period	$ 43,346	$ 41,529	$ 43,346	$ 41,529

Represents the finite-lived intangible assets reclassified during the period.

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The increase (decrease) to the recorded value of intangible assets for foreign currency translation adjustments.

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The aggregate amount assigned to a major class of finite-lived intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

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Amount of other decrease (increase) in the carrying value of goodwill that is not separately disclosed.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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