Note 10 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net revenues	$ 14,180	$ 8,647
Earnings before income tax expense	3,172	124
Net earnings	2,078	81
Corporate, Non-Segment [Member]
Earnings before income tax expense	(372)	(100)
Net earnings	(244)	(65)
iTS [Member] | Operating Segments [Member]
Net revenues	7,776	5,194
Earnings before income tax expense	1,846	573
Net earnings	1,210	373
EMS [Member] | Operating Segments [Member]
Net revenues	6,404	3,453
Earnings before income tax expense	1,698	(349)
Net earnings	$ 1,112	$ (227)