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Changes in Allowance for Doubtful Accounts (Detail) (Allowance for Doubtful Accounts, USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Allowance for Doubtful Accounts
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| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance, beginning of year | $ 24,510 | $ 20,863 | $ 10,066 |
| Effect of foreign exchange movement on opening balance | 2,513 | (2,725) | 1,770 |
| Change in provision for bad debts-reported in statement of operations | 6,436 | 6,372 | 9,027 |
| Other, including charge-offs | (8,209) | 0 | 0 |
| Balance, end of year | $ 25,250 | $ 24,510 | $ 20,863 |