EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Jun. 30, 2013

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule of components of net periodic pension cost

	Three Months Ended   June 30,
	2013			2012
Service cost for benefits earned during the period	$	2,051		$	2,057
Interest cost on pension benefit obligation	6,538			6,433
Expected return on assets	(7,102		)	(7,281		)
Amortization of unrecognized losses	1,877			1,657
Net periodic pension cost	$	3,364		$	2,866

Schedule of Black Scholes Assumptions [Table Text Block]

Risk free interest rate	1.01%
Expected life (years)	5
Volatility	48.7%
Dividend yield	1.60%
Weighted average exercise price of options granted	$62.66 per option
Weighted average grant-date fair value of options granted	$23.77 per option