Note 5 - Goodwill and Other Intangible Assets - Summary of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Total other intangible assets	$ 13,471	$ 13,204
Accumulated amortization	(10,539)	(10,080)
Other intangible assets, net	2,932	3,124
Customer Relationships [Member]
Intangible assets	9,349	9,331
Technology-Based Intangible Assets [Member]
Intangible assets	1,359	1,110
Trade Names [Member]
Intangible assets	1,572	1,572
Trade Names 1 [Member]
Trade name	$ 1,191	$ 1,191