Consolidated Balance Sheets (Current Period Unaudited) - USD ($)		Jun. 30, 2016	Dec. 31, 2015
Common Class A [Member]
Stockholders' Equity:
Common stock		$ 168,950,000	$ 258,410,000
Common Class B [Member]
Stockholders' Equity:
Common stock		219,000	316,000
Cash and cash equivalents		15,044,000	45,008,000
Accounts receivable, net of allowance for doubtful accounts of $3,972 and $2,243		305,293,000	308,462,000
Inventories, net		1,582,274,000	1,470,987,000
Other current assets		38,192,000	54,408,000
Total Current Assets		1,940,803,000	1,878,865,000
Property and equipment, net of accumulated depreciation of $152,048 and $137,853		898,239,000	876,660,000
Goodwill	[1]	214,444,000	213,220,000
Franchise value		162,296,000	157,699,000
Other non-current assets		106,288,000	100,855,000
Total Assets		3,322,070,000	3,227,299,000
Floor plan notes payable		56,767,000	48,083,000
Floor plan notes payable: non-trade		1,316,747,000	1,265,872,000
Current maturities of long-term debt		28,053,000	38,891,000
Trade payables		77,979,000	70,871,000
Accrued liabilities		184,160,000	167,108,000
Total Current Liabilities		1,663,706,000	1,590,825,000
Long-term debt, less current maturities		626,543,000	606,463,000
Deferred revenue		73,540,000	66,734,000
Deferred income taxes		54,647,000	53,129,000
Other long-term liabilities		86,173,000	81,984,000
Total Liabilities		2,504,609,000	2,399,135,000
Preferred stock - no par value; authorized 15,000 shares; none outstanding		0	0
Additional paid-in capital		37,230,000	38,822,000
Accumulated other comprehensive loss			(277,000)
Retained earnings		611,062,000	530,893,000
Total Stockholders' Equity		817,461,000	828,164,000
Total Liabilities and Stockholders' Equity		$ 3,322,070,000	$ 3,227,299,000

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