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Note 12 - Segment Information - Segment Reporting Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Net revenues $ 229,191 $ 181,381
Operating income (loss) 3,729 4,090
Interest expense 1,095 337
Other income, net (406) (401)
Total: 3,040 4,154
Net expense 1,415 2,977
Net income 1,625 1,177
Net Income attributable to non-controlling interests 3,189 2,100
Net Income (Loss) Attributable to Parent, Total (1,564) (923)
Depreciation and amortization 2,109 2,126
Capital expenditures 1,622 1,448
US Segment [Member]    
Net revenues 80,049 52,273
Operating income (loss) (2,543) 518
Interest expense 260 221
Other income, net (1) 8
Total: (2,802) 289
Net expense (253) 1,956
Net income (2,549) (1,667)
Net Income attributable to non-controlling interests 544 99
Net Income (Loss) Attributable to Parent, Total (3,093) (1,766)
Depreciation and amortization 1,431 1,378
Capital expenditures 1,345 942
International Segment [Member]    
Net revenues 149,142 129,108
Operating income (loss) 6,272 3,572
Interest expense 835 116
Other income, net (405) (409)
Total: 5,842 3,865
Net expense 1,668 1,021
Net income 4,174 2,844
Net Income attributable to non-controlling interests 2,645 2,001
Net Income (Loss) Attributable to Parent, Total 1,529 843
Depreciation and amortization 678 748
Capital expenditures $ 277 $ 506