Schedule II-Valuation and Qualifying Accounts Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts receivable
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 27,261	$ 24,852	$ 22,627
Charged to Expenses	9,825	7,467	7,133
Deductions	(3,670)	(4,313)	(3,845)
Translation Adjustments	(2,872)	(745)	(1,063)
Balance at End of Period	30,544	27,261	24,852
Deferred tax valuation allowance
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	37,044	39,310	36,334
Charged to Expenses	1,742	7,053	6,558
Deductions	(6,056)	(8,135)	(2,774)
Translation Adjustments	(3,169)	(1,184)	(808)
Balance at End of Period	$ 29,561	$ 37,044	$ 39,310

Total of the adjustments in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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