|
Assets Held for Sale - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Dec. 31, 2013
Rigs
|
Jun. 30, 2013
Rigs
|
Dec. 31, 2013
Rigs
|
|
| Property Plant And Equipment [Abstract] | |||
| Number of Land Rigs classification assets held for sale | 2 | 5 | |
| Number of Rigs Reclassified from Held-for-sale to Assets Held for Use and Inventory | 2 | 3 | |
| Depreciation expense on reclassified assets | $ 0.7 | ||
| Impairment of property, plant and equipment | $ 1.9 | ||
| X | ||||||||||
|
- Definition
Number of land rigs impacting assets held for sale. No definition available.
|
| X | ||||||||||
|
- Definition
Number of Rigs Reclassified from Held-for-sale to Assets Held for Use and Inventory No definition available.
|
| X | ||||||||||
|
- Definition
For the asset that is reclassified back to held and use from held-for-sale, the depreciation expense recognized when the asset is reclassified. This represents the difference between the carrying value at the time the decision to reclassify is made and the carrying amount that the asset would have had if it had never been classified as held for sale (including consideration of depreciation expense). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|