FAIR VALUES OF ASSETS AND LIABILITIES (Details 4) (Contingent consideration, USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2012
Contingent consideration
Reconciliation of contingent consideration
Balance at the beginning of period	$ 16,226
Increase in fair value related to accretion	767
Decrease in fair value of contingent consideration obligation	(5,471)
Balance at the end of period	$ 11,522

This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant