Allowance For Credit Losses (Table Text Block)	3 Months Ended
	Jun. 30, 2023
Allowance For Credit Loss [Abstract]
Accounts Receivable Allowance For Credit Loss [Table Text Block]	Allowance for Credit Losses     Trade Receivables   Investments, Fixed Maturities   Investments, other   Total     (Unaudited)     (in thousands) Balance as of March 31, 2022 $ 8,649 $ 60 $ 501 $ 9,210 Provision for (reversal of) credit losses   (4,860)   2,041   16   (2,803) Write-offs against allowance   –   –   –   – Recoveries   –   –   –   – Balance as of March 31, 2023 $ 3,789 $ 2,101 $ 517 $ 6,407 Provision for (reversal of) credit losses   591   (455)   301   437 Write-offs against allowance   –   –   –   – Recoveries   –   –   –   – Balance as of June 30, 2023$ 4,380 $ 1,646 $ 818 $ 6,844