Transactions (Restructuring Plan) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,890	$ 873	$ 3,363	$ 2,995
Selling, general and administrative expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,608
Severance and related costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			646
Cost of revenues, excluding depreciation and amortization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 109