Short-term Investments (Notes)  | 
6 Months Ended | 
|---|---|
Sep. 30, 2018  | |
| Investments, Debt and Equity Securities [Abstract] | |
| Short Term Investments [Text Block] | 
 
Short-term Investments
 
As of March 31, 2018, the Company owned Certificates of Deposit amounting to $2.8 million, held at cost. 
 
 | 
| X | ||||||||||
- References No definition available. 
  | 
| X | ||||||||||
- Definition Short-term investments. No definition available. 
  |