Note 4 - Goodwill and Intangible Assets (Detail) - The Components and Estimated Useful Lives of Intangible Assets (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Goodwill and Intangible Assets Gross	$ 1,142	$ 1,142
Goodwill and Intangible Assets Accumulated Amortization	583	484
Goodwill and Intangible Assets Net	559	658
Trade Names [Member]
Goodwill and Intangible Assets Gross	304	304
Goodwill and Intangible Assets Accumulated Amortization	101	81
Goodwill and Intangible Assets Net	203	223
Goodwill and Intangible Assets Estimated Useful Life	15 years	15 years
Patented Technology [Member]
Goodwill and Intangible Assets Gross	620	620
Goodwill and Intangible Assets Accumulated Amortization	310	248
Goodwill and Intangible Assets Net	310	372
Goodwill and Intangible Assets Estimated Useful Life	10 years	10 years
Noncompete Agreements [Member]
Goodwill and Intangible Assets Gross	25	25
Goodwill and Intangible Assets Accumulated Amortization	25	25
Goodwill and Intangible Assets Estimated Useful Life	3 years	3 years
Customer Relationships [Member]
Goodwill and Intangible Assets Gross	170	170
Goodwill and Intangible Assets Accumulated Amortization	138	123
Goodwill and Intangible Assets Net	32	47
Goodwill and Intangible Assets Estimated Useful Life	10 years	10 years
Internet Domain Names [Member]
Goodwill and Intangible Assets Gross	23	23
Goodwill and Intangible Assets Accumulated Amortization	9	7
Goodwill and Intangible Assets Net	$ 14	$ 16
Goodwill and Intangible Assets Estimated Useful Life	15 years	15 years