Parker Wellbore Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Assets Held for Sale - Additional Information (Detail)

Assets Held for Sale - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended			1 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 rig	Sep. 30, 2012	Dec. 31, 2012	Nov. 07, 2013 Subsequent Event [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	$ 7,485,000		$ 7,485,000		$ 6,800,000
Number of Land Rigs impacting assets held for sale			2
Non-cash write-down of assets	900,000
Gain on disposition of assets, net	1,094,000	606,000	2,759,000	2,466,000		100,000
Number of Land Rigs impacting assets held for sale in future			3
Additional depreciation recorded during period	$ 700,000

- 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).

+ References + Details