Consolidated Statements Of Operations (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Revenue:
Sales of Used Vehicles	$ 920,507		$ 838,242		$ 760,767
Interest Income	299,382		283,065		264,974
Dealer Finance and Other Income	2,977		0		0
Total Revenue	1,222,866		1,121,307		1,025,741
Costs and Expenses:
Cost of Used Vehicles Sold	607,932		544,504		481,210
Provision for Credit Losses	253,603		207,198		175,900
Portfolio Debt Interest Expense	41,978		43,475		68,314
Non-Portfolio Debt Interest Expense	4,644		3,034		4,581
Non-Portfolio Debt Interest Expense—Related party	0		0		10,176
Senior Secured Debt Interest Expense	26,209		23,861		11,878
Senior Secured Debt Interest Expense—Related party	261		2,680		3,153
Selling and Marketing	28,139		22,790		16,783
General and Administrative	168,530		157,330		150,373
General and Administrative—Related party	10,873		11,001		15,118
Depreciation Expense	20,150		16,075		13,751
Loss on Extinguishment of Debt	0		0		3,418
Total Costs and Expenses	1,162,319		1,031,948		954,655	[1]
Income Before Income Taxes	60,547		89,359		71,086
Income Tax Expense	1,194		1,221		404
Net Loss Attributable to Non-Controlling Interest-DTAC (1)	(178,318)	[2]	(128,765)	[2]	(150,310)	[2]
Net Income Attributable to DTAG	237,671		216,903		220,992
Net Income	$ 59,353		$ 88,138		$ 70,682

[1] Includes net loss on extinguishment of debt.

[2] Refer to Note 18 for Consolidating Financial Information and discussion regarding non-controlling interest.