Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value, Inputs, Level 1 [Member]

Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

The following tables present certain information for our financial assets that is measured at fair value on a recurring basis at December 31, 2012 and 2011:


	Level 1 2012				Level 1 2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Liabilities:
Long term debt	$	429,193	$	467,500	$	344,439	$	367,400

Fair Value, Inputs, Level 3 [Member]

Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

The following table presents changes in Deferred Acquisition Consideration.


	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
	2012			2011
Beginning Balance of contingent payments	$	129,759		$	98,534
Payments		(55,071	)		(26,656	)
Grants		63,972			46,292
Redemption value adjustments		55,737			13,416
Transfers (to) from fixed payments		159			(1,467	)
Foreign translation adjustment		239			(360	)
Ending Balance of contingent payments	$	194,795		$	129,759

- Definition

Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring and/or nonrecurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

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