Note 10 - Purchase of Interests in Subsidiaries - Consolidated Statement of Income, Pro Forma (Details) - Brazil Acquisition [Member] - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Actual New Momentum Companies from Sept. 14 to Sept. 30, 2016	$ 1,850
Actual New Momentum Companies from Sept. 14 to Sept. 30, 2016	$ (43)
Revenue		$ 40,679	$ 35,301	$ 111,907	$ 111,209
Net (Loss)		$ (151)	$ (338)	$ (161)	$ (594)