Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v2.4.0.6
Subsequent Events - Additional Information (Detail) (Subsequent Event [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Facility
Subsequent Event [Line Items]  
Term loan for acquisition $ 125
Number of operating facilities 22
Term loan agreement date Apr. 18, 2013
Senior unsecured term loan maturity date Apr. 18, 2018
ITS Tubular Services (Holdings) Limited [Member]
 
Subsequent Event [Line Items]  
Business acquisition agreement date Apr. 22, 2013
Initial purchase price of International Tabular Services Limited and other related assets 101
Additional purchase price deposited into ESCROW account 24
Term loan for acquisition $ 125
Funding Date to June 30, 2013 [Member]
 
Subsequent Event [Line Items]  
Term loan interest rate 6.50%
Initial Step-Up Date to April 15, 2014 [Member]
 
Subsequent Event [Line Items]  
Term loan interest rate 7.50%
April 15, 2014 and thereafter [Member]
 
Subsequent Event [Line Items]  
Term loan interest rate 8.50%