Note 7 - Leases (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

Lease, Cost [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Operating lease cost	$	370	$	417	$	736	$	835
Short-term lease cost	$	14	$	13	$	27	$	27

Range of remaining lease terms (in years)	0.3	to	8.9
Weighted average remaining lease term (in years)			5.7
Weighted average discount rate			5.0	%

Schedule of Leases Cash Flow Information [Table Text Block]

Non-cash increases (decreases) in operating lease liabilities and right-of-use assets as a result of lease modifications:
Modification to Ambrell’s U.K. facility lease	$	(486	)
Modification to lease for facility in Mansfield, Massachusetts	$	1,819

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

2019 (remainder)	$	807
2020		1,572
2021		1,064
2022		825
2023		834
Thereafter		1,626
Total lease payments	$	6,728
Less imputed interest		(866	)
Total	$	5,862