Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Allowance for doubtful accounts
Change in the Valuation and Qualifying Accounts [Abstract]
Balance at Beginning of Period	$ 7,799		$ 11,035		$ 7,994
Charged to Costs and Expenses	1,753		(1,050)		4,014
Charged to Other Accounts	71	[1]	(179)	[1]	(188)	[1]
Deductions and Other	3,477	[2]	2,007	[2]	785	[2]
Balance at End of Period	6,146		7,799		11,035
Valuation allowance for deferred tax assets
Change in the Valuation and Qualifying Accounts [Abstract]
Balance at Beginning of Period	3,697		3,455		3,381
Charged to Costs and Expenses	1,732		766		1,438
Charged to Other Accounts	9	[1]	(29)	[1]	61	[1]
Deductions and Other	1,173	[2]	495	[2]	1,425	[2]
Balance at End of Period	$ 4,265		$ 3,697		$ 3,455

[1] —“Additions charged to other accounts” includes translation adjustments and allowances acquired through business combinations.

[2] —“Deductions and other” includes write-offs, net of recoveries, and reductions in the allowances credited to expense.