Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenue:
Finance charges	$ 137,495	$ 117,905	$ 397,563	$ 338,238
Premiums earned	12,206	10,462	34,987	29,195
Other income	5,977	5,372	17,313	19,783
Total revenue	155,678	133,739	449,863	387,216
Costs and expenses:
Salaries and wages	21,720	15,929	61,530	47,402
General and administrative	6,797	6,044	21,463	18,186
Sales and marketing	8,129	5,587	23,478	17,768
Provision for credit losses	9,759	4,550	17,716	22,394
Interest	16,289	14,600	47,150	42,173
Provision for claims	9,122	8,363	26,704	22,733
Total costs and expenses	71,816	55,073	198,041	170,656
Income before provision for income taxes	83,862	78,666	251,822	216,560
Provision for income taxes	30,874	28,706	91,983	78,565
Net income	$ 52,988	$ 49,960	$ 159,839	$ 137,995
Net income per share:
Basic	$ 2.13	$ 1.92	$ 6.24	$ 5.23
Diluted	$ 2.12	$ 1.91	$ 6.22	$ 5.19
Weighted average shares outstanding:
Basic	24,908	26,033	25,629	26,397
Diluted	24,962	26,136	25,706	26,573