Restructuring Charge (Details Textual) - USD ($) $ in Thousands  | 
9 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018  | 
Dec. 31, 2017  | 
Mar. 31, 2018  | 
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| Restructuring Cost and Reserve [Line Items] | |||
| Restructuring | $ 0 | $ 165 | |
| Unpaid balance of restructuring charges | 0 | $ 63 | |
| Employee Severance [Member] | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Restructuring | 0 | ||
| Unpaid balance of restructuring charges | 0 | 0 | |
| Other Restructuring [Member] | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Restructuring | 0 | ||
| Unpaid balance of restructuring charges | $ 0 | $ 63 | |
| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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| X | ||||||||||
- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Details 
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- Details 
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