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v3.19.2

Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Revenues | $ 13,770 | $ 12,607
Grid [Member] |  |
Revenues | 9,855 | 8,929
Grid [Member] | Americas [Member] |  |
Revenues | 7,801 | 7,496
Grid [Member] | Asia Pacific [Member] |  |
Revenues | 1,827 | 808
Grid [Member] | EMEA [Member] |  |
Revenues | 227 | 625
Wind [Member] |  |
Revenues | 3,915 | 3,678
Wind [Member] | Americas [Member] |  |
Revenues | 46 | 23
Wind [Member] | Asia Pacific [Member] |  |
Revenues | 3,856 | 3,595
Wind [Member] | EMEA [Member] |  |
Revenues | 13 | 60
Equipment and Systems [Member] | Grid [Member] |  |
Revenues | 8,354 | 7,462
Equipment and Systems [Member] | Wind [Member] |  |
Revenues | 3,505 | 3,492
Services and Technology Development [Member] | Grid [Member] |  |
Revenues | 1,501 | 1,467
Services and Technology Development [Member] | Wind [Member] |  |
Revenues | $ 410 | $ 186

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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 + Details
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