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Revenue Recognition - Disaggregation of Revenue (Details) $ in Thousands | 3 Months Ended
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Jun. 30, 2018 USD ($)
Grid |
Disaggregation of Revenue [Line Items] |
Revenue | $ 8,929
Grid | Americas |
Disaggregation of Revenue [Line Items] |
Revenue | 7,496
Grid | Asia Pacific |
Disaggregation of Revenue [Line Items] |
Revenue | 808
Grid | EMEA |
Disaggregation of Revenue [Line Items] |
Revenue | 625
Grid | Equipment and systems |
Disaggregation of Revenue [Line Items] |
Revenue | 7,462
Grid | Services and technology development |
Disaggregation of Revenue [Line Items] |
Revenue | 1,467
Wind |
Disaggregation of Revenue [Line Items] |
Revenue | 3,678
Wind | Americas |
Disaggregation of Revenue [Line Items] |
Revenue | 23
Wind | Asia Pacific |
Disaggregation of Revenue [Line Items] |
Revenue | 3,595
Wind | EMEA |
Disaggregation of Revenue [Line Items] |
Revenue | 60
Wind | Equipment and systems |
Disaggregation of Revenue [Line Items] |
Revenue | 3,492
Wind | Services and technology development |
Disaggregation of Revenue [Line Items] |
Revenue | $ 186

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