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

Subsequent Events - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended			0 Months Ended
	Jul. 30, 2013 7.50 % Senior Notes [Member] Subsequent Event [Member]	Jul. 30, 2013 Term Note Due December 2017 [Member] Subsequent Event [Member]	Apr. 18, 2013 Secured Debt [Member] Goldman Term Loan [Member]	Jul. 30, 2013 Secured Debt [Member] Goldman Term Loan [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from issuance of term note	$ 225.0
Debt instrument fixed interest rate	7.50%		6.50%
Repayments of debt		45.0		125.0
Estimated debt issuance costs	$ 6.5
Redemption price, as a percent of principal	35.00%
Redemption price	107.50%
Redemption price afer year ifve	101.00%
Redemption price after year three	103.75%

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.