Note 13 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

2017	$	969
2018		368
2019		249
2020		114
Total	$	1,700

Schedule of Product Warranty Liability [Table Text Block]

	Year Ended December 31,
	2016			2015			2014
Balance at beginning of period	$	289		$	240		$	451
Warranty provision for product sales		1,102			333			282
Settlements made		(68	)		(158	)		(42	)
Unused warranty provision		(293	)		(126	)		(451	)
Balance at end of period	$	1,030		$	289		$	240