Note 5 - Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Intangible Assets, Gross Carrying Amount	$ 12,490	$ 2,990
Net Carrying Amount	10,072	875
Finite-lived, Gross Carrying Amount	11,980	2,480
Finite-lived, Accumulated Amortization	2,418	2,115
Net Carrying Amount	9,562	365
Trademarks [Member]
Indefinite-lived, Gross Carrying Amount	510	510
Customer Relationships [Member]
Finite-lived, Gross Carrying Amount	7,980	1,480
Finite-lived, Accumulated Amortization	1,492	1,328
Net Carrying Amount	6,488	152
Patented Technology [Member]
Finite-lived, Gross Carrying Amount	2,090	590
Finite-lived, Accumulated Amortization	457	424
Net Carrying Amount	1,633	166
Computer Software, Intangible Asset [Member]
Finite-lived, Gross Carrying Amount	270	270
Finite-lived, Accumulated Amortization	236	223
Net Carrying Amount	34	47
Trade Names [Member]
Finite-lived, Gross Carrying Amount	640	140
Finite-lived, Accumulated Amortization	150	140
Net Carrying Amount	490
Order or Production Backlog [Member]
Finite-lived, Gross Carrying Amount	1,000
Finite-lived, Accumulated Amortization	83
Net Carrying Amount	$ 917