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
Movement in valuation and qualifying accounts
Balance at Beginning of Year	$ 25,317	$ 24,692	$ 24,375
Charged to Costs and Expenses	2,978	2,806	2,322
Deductions	3,189	2,181	2,005
Balance at End of Year	25,106	25,317	24,692
Valuation allowance on foreign tax credit carryforwards
Movement in valuation and qualifying accounts
Balance at Beginning of Year	13,576	15,396	16,755
Deductions	2,999	1,820	1,359
Balance at End of Year	10,577	13,576	15,396
Valuation allowance on foreign net operating losses
Movement in valuation and qualifying accounts
Balance at Beginning of Year	1,610	898	560
Charged to Costs and Expenses		712	338
Deductions	110
Balance at End of Year	1,500	1,610	898
Valuation allowance on state net operating losses
Movement in valuation and qualifying accounts
Balance at Beginning of Year	1,126	494
Charged to Costs and Expenses	561	632	494
Balance at End of Year	1,687	1,126	494
Allowance for doubtful accounts
Movement in valuation and qualifying accounts
Balance at Beginning of Year	9,005	7,904	7,060
Charged to Costs and Expenses	2,417	1,462	1,490
Deductions	80	361	646
Balance at End of Year	$ 11,342	$ 9,005	$ 7,904

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Total of 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 established to represent expected future costs.

+ References

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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