Note 5 - Income Taxes (Detail) - Deferred Tax Assets and Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets:
Allowance for doubtful accounts	$ 86	$ 108
Accrued expenses	356	345
Share based compensation	859	1,449
Capital loss carryforward	1,132	1,268
Net operating loss	170	719
Tax credit carryforward	319
Gross deferred tax assets	2,922	3,889
Less Valuation Allowance	(1,138)	(1,352)
Deferred tax assets	1,784	2,537
Deferred tax liabilities:
Prepaid expenses	324	142
Property and equipment	1,790	2,505
Intangible assets	6,415	6,506
Other	235	184
Deferred tax liabilities	8,764	9,337
Net deferred tax liabilities	$ (6,980)	$ (6,800)