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Disposition of Assets - Additional Information (Detail) (USD $)
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1 Months Ended | 12 Months Ended | 3 Months Ended | ||||
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Dec. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2013
New Zealand [Member]
rig
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Dec. 31, 2013
Oklahoma [Member]
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Sep. 30, 2013
Mexico [Member]
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| Significant Acquisitions and Disposals [Line Items] | |||||||
| Number of land rigs sold | 2 | ||||||
| Assets held-for-sale, at carrying value | $ 2,300,000 | $ 300,000 | |||||
| Asset dispositions, proceeds | 200,000 | 3,200,000 | 800,000 | 500,000 | |||
| Asset dispositions, loss | 500,000 | 500,000 | 900,000 | (100,000) | 200,000 | ||
| Provision for reduction in carrying value of certain assets | $ 2,544,000 | $ 0 | $ 1,350,000 | ||||
| X | ||||||||||
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- Definition
Number of land rigs and related equipment sold. No definition available.
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| X | ||||||||||
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- Definition
Represents the sum of the carrying value of all the Assets Held-for-Sale at the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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| X | ||||||||||
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- Definition
The difference between the value of the consideration received by the Entity on the sale or disposal and the consideration received by the Entity, including any tax related impact. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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