Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income	$ 16,796	$ 8,705
Adjustments to reconcile net income to net cash used in operating activities:
Asset impairments	115	382
Stock-based compensation	576	491
(Gain) loss on disposal of other assets	(988)	105
Deferred income taxes	(870)	(394)
Excess tax benefit from share-based payment arrangements	(749)	(21)
(Increase) decrease (net of acquisitions and dispositions):
Trade receivables, net	(11,633)	(4,648)
Inventories	(62,113)	(41,769)
Other current assets	5,292	(888)
Other non-current assets	2,778	(412)
Increase (decrease) (net of acquisitions and dispositions):
Floor plan notes payable	(3,324)	9,905
Trade payables	1,549	3,296
Accrued liabilities	5,105	9,683
Other long-term liabilities and deferred revenue	2,280	132
Net cash used in operating activities	(40,987)	(11,240)
Cash flows from investing activities:
Principal payments received on notes receivable	25	36
Capital expenditures	(8,459)	(2,333)
Proceeds from sales of assets	1,009	3,084
Payments for life insurance policies	(1,968)	(1,048)
Proceeds from sales of stores	2,901
Net cash used in investing activities	(6,492)	(261)
Cash flows from financing activities:
Borrowings on floor plan notes payable: non-trade	39,401	39,262
Borrowings on lines of credit	5,000
Repayments on lines of credit	(12,000)	(9,000)
Proceeds from issuance of long-term debt	8,069
Proceeds from issuance of common stock	869	590
Repurchase of common stock	(2,653)	(141)
Excess tax benefit from share-based payment arrangements	749	21
Dividends paid	(1,814)	(1,316)
Net cash provided by financing activities	35,593	15,313
Increase (decrease) in cash and cash equivalents	(11,886)	3,812
Cash and cash equivalents at beginning of period	20,851	9,306
Cash and cash equivalents at end of period	8,965	13,118
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	5,794	6,017
Cash paid during the period for income taxes, net	2,122	927
Scheduled Payments [Member]
Cash flows from financing activities:
Principal payments on long-term debt and capital leases	(2,028)	(2,233)
Other Payments [Member]
Cash flows from financing activities:
Principal payments on long-term debt and capital leases		(11,870)
Segment, Continuing Operations [Member]
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	4,199	4,092
Segment, Discontinued Operations [Member]
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization		$ 101