Executive Stock Plans And Stock-Based Compensation (Tables)

12 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary Of Stock Option And SAR Activity

	Shares		Weighted-Average Exercise Price		Weighted-Average Contractual Term (in years)	Aggregate Intrinsic Value
Fiscal Year Ended March 31, 2011:
Outstanding at beginning of year	831,798		$	48.36
Granted	153,600		39.71
Cancelled/expired	(62,800	)	62.66
Outstanding at end of year	922,598		45.94
Fiscal Year Ended March 31, 2012:
Granted	170,400		37.86
Exercised	(195,948	)	35.82
Cancelled/expired	(41,200	)	59.25
Outstanding at end of year	855,850		46.01
Fiscal Year Ended March 31, 2013:
Exercised	(407,758	)	41.21
Cancelled/expired	(29,615	)	54.83
Outstanding at end of year	418,477		$	50.07	5.29	$	3,617
Exercisable at end of year	270,201		$	56.48	3.85	$	999
Expected to vest in future periods	148,276		$	38.39	7.92	$	2,618

Intrinsic Value And Fair Value Of SARs

	Fiscal Year Ended March 31,
	2013		2012		2011
Total intrinsic value of stock options and SARs exercised	$	4,249	$	1,745	$	—
Total fair value of SARs vested	$	1,460	$	1,713	$	1,849

Summary Of RSU, Restricted Stock, And PSA Activity

	RSUs				Restricted Stock				PSAs
	Shares		Weighted-Average Grant Date Fair Value		Shares		Weighted-Average Grant Date Fair Value		Shares		Weighted-Average Grant Date Fair Value
Fiscal Year Ended March 31, 2011:
Unvested at beginning of year	207,764		$	32.50	84,750		$	40.87	93,019		$	34.85
Granted	63,992		41.40		—		—		38,400		33.95
Vested	(24,940	)	46.35		(7,000	)	41.96		—		—
Unvested at end of year	246,816		44.07		77,750		40.77		131,419		34.59
Fiscal Year Ended March 31, 2012:
Granted	84,290		38.28		—		—		57,383		35.56
Vested	(39,827	)	35.94		(10,350	)	37.52		(44,352	)	45.96
Forfeited	—		—		—		—		(1,984	)	33.30
Unvested at end of year	291,279		43.72		67,400		41.91		142,466		31.45
Fiscal Year Ended March 31, 2013:
Granted	87,780		44.06		—		—		92,425		35.25
Vested	(86,925	)	52.42		(7,550	)	43.74		(94,725	)	29.67
Forfeited	—		—		—		—		(5,149	)	36.15
Unvested at end of year	292,134		$	41.23	59,850		$	41.68	135,017		$	35.12

Assumptions Used To Estimate Grant Date Fair Value Of SARs

	Fiscal Year Ended March 31,
	2012	2011
Assumptions:
Expected term	5.0 years	5.0 years
Expected volatility	35.80%	35.30%
Expected dividend yield	5.07%	4.73%
Risk-free interest rate	1.66%	2.36%
Resulting fair value of SARs granted	$7.46	$8.35

Stock-Based Compensation Expense And Related Income Tax Benefit Recognized

	Fiscal Year Ended March 31,
	2013		2012		2011
Total stock-based compensation expense	$	6,171	$	5,987	$	5,893
Income tax benefit recorded on stock-based compensation expense	$	2,160	$	2,095	$	2,063