Note 3 - Revenue From Contracts With Customers (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Contract with Customer, Asset and Liability [Table Text Block]

(in thousands)	Three Months Ended March 31, 2019			Three Months Ended March 31, 2018
Current contract liabilities - January 1	$	2,226		$	4,661
Long-term contract liabilities - January 1 (1)		129			84
Total contract liabilities - January 1	$	2,355		$	4,745
Total contract liabilities - January 1	$	2,355		$	4,745
Contract additions, net		1,033			1,279
Revenue recognized		(813	)		(908	)
Translation		35			146
Total contract liabilities - March 31	$	2,610		$	5,262
Current contract liabilities - March 31	$	2,453		$	5,168
Long-term contract liabilities - March 31 (1)		157			94
Total contract liabilities - March 31	$	2,610		$	5,262

Disaggregation of Revenue [Table Text Block]

(in thousands)	Power and Electromechanical		Energy		Total
Distributor sales	$	9,430	$	—	$	9,430
Direct sales		8,121		5,458		13,579
Total revenues	$	17,551	$	5,458	$	23,009

(in thousands)	Power and Electromechanical		Energy		Total
Distributor sales	$	9,617	$	—	$	9,617
Direct sales		7,403		4,946		12,349
Total revenues	$	17,020	$	4,946	$	21,966

(in thousands)	Power and Electromechanical		Energy		Total
Revenues recognized at point in time	$	17,551	$	1,152	$	18,703
Revenues recognized over time		—		4,306		4,306
Total revenues	$	17,551	$	5,458	$	23,009

(in thousands)	Power and Electromechanical		Energy		Total
Revenues recognized at point in time	$	17,020	$	1,047	$	18,067
Revenues recognized over time		—		3,899		3,899
Total revenues	$	17,020	$	4,946	$	21,966

(in thousands)	Power and Electromechanical		Energy		Total
North America	$	13,641	$	1,824	$	15,465
Europe		889		3,563		4,452
Asia		3,020		19		3,039
Other		1		52		53
Total revenues	$	17,551	$	5,458	$	23,009

(in thousands)	Power and Electromechanical		Energy		Total
North America	$	13,032	$	1,365	$	14,397
Europe		1,094		3,524		4,618
Asia		2,819		29		2,848
Other		75		28		103
Total revenues	$	17,020	$	4,946	$	21,966