2. Finance Receivables (Detail 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Finance Receivables Details
Balance at beginning of period	$ 14,093	$ 10,284	$ 10,351	$ 13,168
Provision for credit losses on finance receivables	9,465	3,982	22,012	12,034
Charge-offs	(9,578)	(8,000)	(26,158)	(27,796)
Recoveries	2,966	3,503	10,741	12,363
Balance at end of period	$ 16,946	$ 9,769	$ 16,946	$ 9,769