Debt - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 Bank	Dec. 31, 2011	Dec. 31, 2010
Debt [Line Items]
Proceeds from consolidated operations from annual renewable	$ 200,000
Consortium Bank	4
Additional borrowing capacity of credit facility	278,100
Property tax exemption			100.00%
Assets associated with city of Texarkana	20,000	17,400
Liabilities associated with city of Texarkana	20,000	17,400
Future due payment related to debt in year 2013	2,319
Future due payment related to debt in year 2014	31,639
Future due payment related to debt in year 2015	5,437
Future due payment related to debt in year 2016	1,745
Future due payment related to debt in year 2017	600
Short term notes payable from consolidated operations	32,836	131,651
Weighted average interest rate of short term notes payable	5.34%	4.61%
Interest paid on debt	38,727	38,853	37,758
Interest capitalized	7,649	3,527	959
Cooper Receivables LLC [Member]
Debt [Line Items]
Accounts receivable from securitization	175,000
Letter of Credit [Member]
Debt [Line Items]
Amounts used to secure letters of credit	81,900	66,800
Asian Credit Lines [Member]
Debt [Line Items]
Proceeds from consolidated operations from annual renewable	394,000
Additional borrowing capacity of credit facility	$ 346,500