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1. Basis of Presentation and Use of Estimates Immaterial Errors (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Payments for Acquisitions, Net of Cash Received, and Long-Term Investments	$ 1,364,000	$ 64,056,000
Payments of contingent consideration	0	10,574,000
Payments to Suppliers and Employees	468,101,000	460,093,000
Payments for (proceeds from) derivative instruments, operating activities	1,325,000	(3,943,000)
Scenario, Previously Reported [Member] \| Immaterial Error [Member]
Payments for Acquisitions, Net of Cash Received, and Long-Term Investments		(11,000,000)
Payments for (Proceeds from) Derivative Instrument, Investing Activities		(3,900,000)
Restatement Adjustment [Member] \| Immaterial Error [Member]
Payments of contingent consideration		10,600,000
Payments to Suppliers and Employees		400,000
Payments for (proceeds from) derivative instruments, operating activities		$ 3,900,000