Note 14 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Year Ended December 31,	2012		2011		2010
Current:
Federal	$	31,438	$	21,779	$	9,093
State		3,626		3,561		1,619
		35,064		25,340		10,712
Deferred:
Federal		10,888		7,046		(1,670	)
State		3,110		674		(417	)
		13,998		7,720		(2,087	)
Total	$	49,062	$	33,060	$	8,625

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

December 31,	2012			2011
Deferred tax assets:
Deferred revenue and cancellation reserves	$	7,597		$	6,369
Allowances and accruals, including state tax carryforward amounts		21,340			20,234
Interest on derivatives		1,796			2,889
Goodwill		18,139			26,817
Capital loss carryforward		12,248			12,841
Total deferred tax assets		61,120			69,150
Deferred tax liabilities:
Inventories		(4,684	)		(4,351	)
Property and equipment, principally due to differences in depreciation		(22,484	)		(16,418	)
Prepaids and property taxes		(1,356	)		(1,540	)
Total deferred tax liabilities		(28,524	)		(22,309	)
Valuation allowance		(11,641	)		(12,841	)
Total	$	20,955		$	34,000

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Year Ended December 31,	2012			2011			2010
Federal tax provision at statutory rate	$	44,723		$	30,895		$	7,774
State taxes, net of federal income tax benefit		4,772			3,021			973
Non-deductible expenses		618			208			223
Permanent differences related to the employee stock purchase program		52			105			164
Release of valuation allowance		(1,200	)		(346	)		-
Other		97			(823	)		(509	)
Income tax provision	$	49,062		$	33,060		$	8,625