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Schedule II - Valuation and Qualifying Accounts (Detail) (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 and notes [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance at beginning of year | $ 1,544 | $ 7,020 | $ 4,095 |
| Charged to cost and expenses | 4,264 | 2,258 | 3,244 |
| Charged to other accounts | 3,195 | (2,034) | (211) |
| Deductions | (886) | (5,700) | (108) |
| Balance at end of year | 8,117 | 1,544 | 7,020 |
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Allowance for obsolete rig materials and supplies [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance at beginning of year | 316 | 309 | |
| Charged to cost and expenses | 26 | 309 | |
| Deductions | (4) | (19) | |
| Balance at end of year | 312 | 316 | 309 |
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Deferred tax valuation allowance [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance at beginning of year | 6,467 | 5,532 | 5,194 |
| Charged to cost and expenses | (1,662) | 2,542 | 338 |
| Charged to other accounts | (1,607) | ||
| Balance at end of year | $ 4,805 | $ 6,467 | $ 5,532 |
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
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, charged to costs and expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
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, charged to accounts other than costs and expenses in a given period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total of the deductions 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 established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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