Adjusted Cost and Estimated Market Value Available-for-Sale Investment (Table Text Block)

12 Months Ended

Mar. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Adjusted Cost and Estimated Market Value of Available-for-sale Investments

The adjusted cost and estimated market value of available-for-sale investments at March 31, 2014 and 2013, respectively, by contractual maturity, were as follows:

		March 31, 2014				March 31, 2013
		Amortized Cost		Estimated Market Value		Amortized Cost		Estimated Market Value
		(In thousands)
Due in one year or less	$	20,235	$	20,475	$	43,658	$	44,333
Due after one year through five years		185,447		194,563		180,448		191,930
Due after five years through ten years		350,048		350,953		281,546		302,188
Due after ten years		531,645		521,289		448,169		486,780
		1,087,375		1,087,280		953,821		1,025,231
Mortgage backed securities		12,425		12,187		6,730		6,985
Redeemable preferred stocks		18,445		17,533		23,705		24,212
Equity securities		17,299		21,275		43,729		38,910
	$	1,135,544	$	1,138,275	$	1,027,985	$	1,095,338