Acquisitions Schedule of Purchase Price Allocation (Details) - Creative Circle [Member] $ in Thousands	Jun. 05, 2015 USD ($)
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	$ 4,840
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	34,386
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	4,462
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	5,077
BusinessCombinationRecognizedGoodwill	358,029
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	194,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	651
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	601,945
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	12,254
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 589,691	[1]

[1] Excluding cash acquired and a $0.9 million adjustment for net working capital in excess of the targeted amount (thereby increasing the actual purchase price paid), the purchase price for Creative Circle was $584.0 million as described in the discussion above.