Quarterly report pursuant to Section 13 or 15(d)

TRADING AND AVAILABLE-FOR-SALE SECURITIES AT FAIR VALUE (Details 1)

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TRADING AND AVAILABLE-FOR-SALE SECURITIES AT FAIR VALUE (Details 1) - USD ($)
Sep. 30, 2020
Mar. 31, 2020
Trading securities $ 311,832,000 $ 156,544,000
Total Available-for-sale securities, at fair value 1,000 6,438,000
Level 1    
Trading securities 300,222,000 145,285,000
Total Available-for-sale securities, at fair value 0 672,000
Level 2    
Trading securities 0 0
Total Available-for-sale securities, at fair value 0 5,765,000
Level 3    
Trading securities 11,610,000 11,259,000
Total Available-for-sale securities, at fair value 1,000 1,000
Debt securities    
Trading securities 248,409,000 87,014,000
Total Available-for-sale securities, at fair value 0 405,000
Debt securities | Level 1    
Trading securities 248,409,000 87,014,000
Total Available-for-sale securities, at fair value   0
Debt securities | Level 2    
Trading securities 0 0
Total Available-for-sale securities, at fair value   405,000
Debt securities | Level 3    
Trading securities 0 0
Total Available-for-sale securities, at fair value   0
Equity securities    
Trading securities 63,422,000 69,530,000
Total Available-for-sale securities, at fair value 1,000 1,000
Equity securities | Level 1    
Trading securities 51,812,000 58,271,000
Total Available-for-sale securities, at fair value 0 0
Equity securities | Level 2    
Trading securities 0 0
Total Available-for-sale securities, at fair value 0 0
Equity securities | Level 3    
Trading securities 11,610,000 11,259,000
Total Available-for-sale securities, at fair value 1,000 1,000
Mutual investment funds    
Trading securities 1,000 0
Total Available-for-sale securities, at fair value 0 672,000
Preferred Shares    
Total Available-for-sale securities, at fair value 0 284,000
Preferred Shares | Level 1    
Total Available-for-sale securities, at fair value 0 0
Preferred Shares | Level 2    
Total Available-for-sale securities, at fair value 0 284,000
Preferred Shares | Level 3    
Trading securities 0  
Total Available-for-sale securities, at fair value 0 0
Certificate of deposit    
Total Available-for-sale securities, at fair value 1 5,076,000
Certificate of deposit | Level 1    
Total Available-for-sale securities, at fair value 0 0
Certificate of deposit | Level 2    
Total Available-for-sale securities, at fair value 0 5,076,000
Certificate of deposit | Level 3    
Total Available-for-sale securities, at fair value 0 0
Mutual investment funds | Level 1    
Trading securities 1,000  
Total Available-for-sale securities, at fair value 0 672,000
Mutual investment funds | Level 2    
Trading securities 0  
Total Available-for-sale securities, at fair value 0 0
Mutual investment funds | Level 3    
Trading securities 0  
Total Available-for-sale securities, at fair value $ 0 $ 0