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Restructuring - Schedule of Charges and Payments (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Apr. 04, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Number of positions eliminated, period percent | 8.00% |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Accrued restructuring beginning balance |  |  |  | $ 435 | $ 0
Charges to operations |  | $ 47 | $ 1 | 450 | 1,328
Cash payments |  |  |  | (885) | (934)
Accrued restructuring ending balance |  | 0 | 394 | 0 | 394
Employee Severance |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Charges to operations |  |  |  |  | 1,300
Severance pay and benefits |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Accrued restructuring beginning balance |  |  |  | 262 | 0
Charges to operations |  |  |  | 0 | 1,328
Cash payments |  |  |  | (262) | (934)
Accrued restructuring ending balance |  | 0 | 394 | 0 | 394
Facility Exit And Relocation Costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Exit costs |  |  |  | 400 |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Accrued restructuring beginning balance |  |  |  | 173 | 0
Charges to operations |  |  |  | 450 | 0
Cash payments |  |  |  | (623) | 0
Accrued restructuring ending balance |  | $ 0 | $ 0 | $ 0 | 0
Former executive officer | Severance pay and benefits |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Period of post employment salary | 18 months |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Charges to operations |  |  |  |  | $ 500

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