CASH AND CASH EQUIVALENTS (Details 1) - USD ($)
|
Sep. 30, 2021 |
Mar. 31, 2021 |
| Remaining contractual maturity: up to 30 days |
$ 164,230,000
|
$ 248,946,000
|
| Remaining contractual maturity: 30 - 90 days |
10,000
|
0
|
| Total contractual maturity |
164,240,000
|
248,946,000
|
| Corporate equity |
|
|
| Remaining contractual maturity: up to 30 days |
141,873,000
|
51,564,000
|
| Remaining contractual maturity: 30 - 90 days |
0
|
0
|
| Total contractual maturity |
$ 141,873,000
|
$ 51,564,000
|
| Average interest rate |
0.39%
|
2.76%
|
| Non-U.S. sovereign debt |
|
|
| Remaining contractual maturity: up to 30 days |
$ 11,582,000
|
$ 101,258,000
|
| Remaining contractual maturity: 30 - 90 days |
10,000
|
0
|
| Total contractual maturity |
$ 11,592,000
|
$ 101,258,000
|
| Average interest rate |
1.20%
|
1.07%
|
| Corporate debt [Member] |
|
|
| Remaining contractual maturity: up to 30 days |
$ 10,775,000
|
$ 94,562,000
|
| Remaining contractual maturity: 30 - 90 days |
0
|
0
|
| Total contractual maturity |
$ 10,775,000
|
$ 94,562,000
|
| Average interest rate |
3.16%
|
4.42%
|
| U.S. sovereign debt |
|
|
| Remaining contractual maturity: up to 30 days |
|
$ 1,562,000
|
| Remaining contractual maturity: 30 - 90 days |
|
0
|
| Total contractual maturity |
|
$ 1,562,000
|
| Average interest rate |
|
0.50%
|