Note 12 - Business Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Revenue from External Customers by Geographic Areas [Table Text Block]

	Year Ended December 31,
	2017		2016		2015
Consolidated Revenue:
United States	$	26,327	$	25,608	$	25,836
Brazil		13,069		13,083		746
Other Foreign Countries		305		289		393
Total Revenue	$	39,701	$	38,980	$	26,975