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Fair Value Measurement (Details 1) (Contingent earnout consideration [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Contingent earnout consideration [Member]
Reconciliation of the beginning and ending Level 3 net liabilities
Balance at December 31, 2011	$ 231
Change in fair value related to Meridian contingent earnout consideration	(231)
Ending balance at June 30, 2012

Amount of increase (decrease) of liabilities measured at fair value on a recurring basis using unobservable inputs (level 3) which have taken place during the period. Such increase (decrease) may be comprised of changes in fair value (gains or losses) whether realized or unrealized that have been included in earnings, changed net asset value, or other comprehensive income (a separate component of shareholders' equity); purchases, sales, issues, or settlements of assets; and net transfers in to or out of this category within the fair value hierarchy.

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