Fair Value Measurements (Table Text Block)

12 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis

Year Ended March 31, 2018		Total		Level 1		Level 2		Level 3
		(In thousands)
Assets
Short-term investments	$	475,320	$	475,320	$	–	$	–
Fixed maturities - available for sale		1,881,137		7,567		1,873,293		277
Preferred stock		10,861		10,861		–		–
Common stock		27,862		27,862		–		–
Derivatives		4,388		4,388		–		–
Total	$	2,399,568	$	525,998	$	1,873,293	$	277
Liabilities
Derivatives		460		–		460		–
Total	$	460	$	–	$	460	$	–

Year Ended March 31, 2017		Total		Level 1		Level 2		Level 3
		(In thousands)
Assets
Short-term investments	$	521,911	$	521,710	$	201	$	–
Fixed maturities - available for sale		1,625,845		6,491		1,619,024		330
Preferred stock		13,489		13,489		–		–
Common stock		24,434		24,434		–		–
Derivatives		4,260		4,260		–		–
Total	$	2,189,939	$	570,384	$	1,619,225	$	330
Liabilities
Derivatives		4,903		–		4,903		–
Total	$	4,903	$	–	$	4,903	$	–

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

		Fixed Maturities - Asset Backed Securities
		(In thousands)
Balance at March 31, 2016	$	338
Fixed Maturities - Asset Backed Securities - redeemed		(12)
Fixed Maturities - Asset Backed Securities - net gain (unrealized)		4
Balance at March 31, 2017	$	330
Fixed Maturities - Asset Backed Securities - redeemed		(91)
Fixed Maturities - Asset Backed Securities - net gain (unrealized)		38
Balance at March 31, 2018	$	277