Related Party Transactions (Details) (USD $)	12 Months Ended							12 Months Ended						1 Months Ended		12 Months Ended		1 Months Ended
	Dec. 31, 2012 Board of Directors Chairman [Member] reconditioning_facility facility dealership	Dec. 31, 2011 Board of Directors Chairman [Member] closed_facility dealership	Dec. 31, 2010 Board of Directors Chairman [Member] dealership	Dec. 31, 2011 Director [Member] closed_facility dealership	Dec. 31, 2010 Director [Member] reconditioning_facility dealership	Dec. 31, 2012 Chief Executive Officer [Member] dealership	Dec. 31, 2011 Chief Executive Officer [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]	Aug. 02, 2012 Subordinated Debt [Member] Board of Directors Chairman [Member]	Jun. 30, 2010 Senior Notes [Member]	Dec. 31, 2011 Senior Notes [Member] Outstanding Debt Held By Related Party [Member]	Jun. 30, 2010 Senior Notes [Member] Outstanding Debt Held By Related Party [Member]	Dec. 31, 2011 Chief Executive Officer [Member] Non-cash Compensation Expense [Member]	Jan. 31, 2008 Chief Executive Officer [Member] Non-cash Compensation Expense [Member]	Dec. 31, 2012 Chief Executive Officer [Member] Non-cash Compensation Expense [Member]	Dec. 31, 2010 Chief Executive Officer [Member] Non-cash Compensation Expense [Member]	Aug. 31, 2012 Senior Notes owned by Verde [Member] Senior Notes [Member]	Aug. 02, 2012 Senior Notes owned by Verde [Member] Senior Notes [Member]
Related Party Transaction [Line Items]
Number of Stores	13	14	15		1	1	1
Number of Reconditioning Centers	3	3	3		1
Number of Closed facilities	3	3
Lease Expiration Date	Aug. 30, 2015							Dec. 31, 2013	Dec. 31, 2023
Lease Termination Fees			$ 400,000	$ 400,000
Number of Closed Facilities With Terminated Leases		1		2
Mr. Fidel's interest in DTAG and DTAC purchased by Mr. Garcia, percent															5.00%
Mr. Fidel's interest in DTAG and DTAC purchased by Mr. Garcia															17,500,000
Portion of Mr. Fidel's interest in DTAG and DTAC purchased with cash															6,250,000
Portion of Mr. Fidel's interest in DTAG and DTAC purchased with a promissory note															11,250,000
Interest rate on promissory note															8.00%
Term of promissory note															5 years
Interest paid by Mr. Garcia to Mr. Fidel														300,000		100,000	500,000
Aircraft Rental	150,000
Original Debt Amount										$ 75,000,000	$ 200,000,000.0	$ 0	$ 49,000,000.0						$ 5,000,000
Purchase Price in Excess of Par, Percent																		111.00%