Note 6 - Summary of Goodwill and Intangible Assets (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Trade Names 1 [Member]
Trade name	$ 1,191,000	$ 1,191,000
Customer Relationships [Member]
Customer related	9,339,000	9,323,000
Technology-Based Intangible Assets [Member]
Customer related	1,110,000	1,110,000
Trade Names [Member]
Customer related	1,572,000	1,572,000
Total other intangible assets	13,212,000	13,196,000
Accumulated amortization	(9,620,000)	(9,418,000)
Other intangible assets, net	$ 3,592,000	$ 3,778,000