Acquisitions (Tables)

3 Months Ended

Mar. 31, 2012

AWR Corporation [Member]

Business Acquisition [Line Items]

Summary Of The Allocation Of The Purchase Price Of Acquisitions

		Amount
		(in thousands)
Net tangible assets acquired	$	10,718
Amortizable intangible assets		31,685
Deferred tax liability		(10,011)
Goodwill		34,003
Total	$	66,395

Phase Matrix Inc. [Member]

Business Acquisition [Line Items]

Summary Of The Allocation Of The Purchase Price Of Acquisitions

		Amount
		(in thousands)
Net tangible assets acquired	$	5,624
Amortizable intangible assets		8,331
Goodwill		26,725
Total	$	40,680