Note 11 - Federal and State Income Taxes (Detail) - Significant Components Deferred Tax assets and Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current deferred tax assets:
Accrued expenses not deductible until paid	$ 3,885	$ 2,766
Equity Incentive Plan	266	299
Revenue recognition	277	229
Allowance for doubtful accounts	162	161
Other	16	15
Total current deferred tax assets	4,606	3,470
Current deferred tax liabilities:
Prepaid expenses deductible when paid	(5,910)	(5,163)
Total current deferred tax liabilities	(5,910)	(5,163)
Net current deferred tax liabilities	(1,304)	(1,693)
Noncurrent deferred tax assets:
Non-compete agreement	41	63
Net operating loss carryforwards	16,452	12,551
Total noncurrent deferred tax assets	16,493	12,614
Noncurrent deferred tax liabilities:
Tax over book depreciation	(52,237)	(57,612)
Capitalized leases	(215)	(157)
Other	6	(38)
Total noncurrent deferred tax liabilities	(52,446)	(57,807)
Net noncurrent deferred tax liabilities	$ (35,953)	$ (45,193)