EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Jun. 30, 2012

Employee Benefit Plans [Abstract]

Schedule of components of net periodic pension cost

	Three Months Ended
	June 30,
	2012		2011
Service cost for benefits earned during the period	$	2,057	$	1,634
Interest cost on pension benefit obligation		6,433		7,212
Expected return on assets		(7,281)		(7,489)
Amortization of unrecognized losses		1,657		1,377
Net periodic pension cost	$	2,866	$	2,734

Schedule of Black Scholes Assumptions [Table Text Block]

Risk free interest rate		0.76	%
Expected life (years)		5
Volatility		50.20	%
Dividend yield		1.84	%
Weighted average exercise price of options granted	$	43.38	per option
Weighted average grant-date fair value of options granted	$	16.65	per option