Consolidated Balance Sheets (Current Period Unaudited) - USD ($)		Mar. 31, 2016	Dec. 31, 2015
Common Class A [Member]
Stockholders' Equity:
Common stock		$ 213,699,000	$ 258,410,000
Common Class B [Member]
Stockholders' Equity:
Common stock		219,000	316,000
Cash and cash equivalents		21,559,000	45,008,000
Accounts receivable, net of allowance for doubtful accounts of $3,729 and $2,243		286,292,000	308,462,000
Inventories, net		1,541,085,000	1,470,987,000
Other current assets		50,473,000	54,408,000
Total Current Assets		1,899,409,000	1,878,865,000
Property and equipment, net of accumulated depreciation of $145,033 and $137,853		882,405,000	876,660,000
Goodwill	[1]	213,934,000	213,220,000
Franchise value		161,668,000	157,699,000
Other non-current assets		110,202,000	100,855,000
Total Assets		3,267,618,000	3,227,299,000
Floor plan notes payable		55,836,000	48,083,000
Floor plan notes payable: non-trade		1,296,751,000	1,265,872,000
Current maturities of long-term debt		33,721,000	38,891,000
Trade payables		78,250,000	70,871,000
Accrued liabilities		179,145,000	167,108,000
Total Current Liabilities		1,643,703,000	1,590,825,000
Long-term debt, less current maturities		595,663,000	606,463,000
Deferred revenue		70,066,000	66,734,000
Deferred income taxes		59,134,000	53,129,000
Other long-term liabilities		84,375,000	81,984,000
Total Liabilities		2,452,941,000	2,399,135,000
Preferred stock - no par value; authorized 15,000 shares; none outstanding		0	0
Additional paid-in capital		34,866,000	38,822,000
Accumulated other comprehensive loss		(114,000)	(277,000)
Retained earnings		566,007,000	530,893,000
Total Stockholders' Equity		814,677,000	828,164,000
Total Liabilities and Stockholders' Equity		$ 3,267,618,000	$ 3,227,299,000

[1] Net of accumulated impairment losses of $299.3 million recorded during the year ended December 31, 2008.