Stock-Based Compensation (Tables)

12 Months Ended

Mar. 31, 2015

Stock-Based Compensation [Abstract]

Schedule Of Valuation Assumptions

	Year Ended March 31
	2015		2014		2013
Risk-free interest rate	1.6	%	1.4	%	0.7	%
Expected volatility	24	%	30	%	38	%
Expected life (years)	4.2		4.3		4.1
Dividend yield	0	%	0	%	0	%

Summary Of Options Outstanding

Ranges of Exercise Prices	Number Outstanding	Weighted Average Exercise Price		Weighted Remaining Contractual Life (years)
$  15.08 - 16.33	18,090	$	16.19	0.8
31.27 - 42.45	5,000		37.12	3.8
51.04 - 67.69	12,000	58.11		7.5
	35,090	$	33.51	3.5

Summary Of Stock Options And Warrants

	Option Shares Reserved		Options Outstanding		Weighted Average Option Exercise Price		Warrants Outstanding		Weighted Average Warrant Exercise Price
At March 31, 2012	162,230		109,000		$	25.85	10,000		$	16.28
Granted	(4,000	)	4,000		$	54.11	-			-
Exercised	-		(64,000	)	$	24.23	-		-
Terminated	-		-		$	-	(6,000	)		7.35
At March 31, 2013	158,230		49,000		$	30.27	4,000		$	29.69
Granted	(4,000	)	4,000		$	49.86	-			-
Exercised	-		(14,000	)	$	29.77	-		-
Terminated	1,000		(1,000	)	$	58.27	(2,000	)		21.99
At March 31, 2014	155,230		38,000		$	31.78	2,000		$	37.38
Granted	(4,000	)	4,000		$	67.69	-			-
Exercised	-		(6,910	)	$	43.81	-		-
Terminated	-		-		$	-	(2,000	)		37.38
At March 31, 2015	151,230		35,090		$	33.51	-		$	-