Net income per common share (Tables)

9 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the computation of basic and diluted net income per common share (in thousands, except per share amounts):

	Three Months Ended				Nine Months Ended
	December 31,				December 31,
	2013		2012		2013		2012
Net income	$	105,401	$	10,173	$	283,786	$	67,699
Weighted average common shares outstanding	198,759		194,958		197,845		194,157
Dilutive effect of stock options and RSUs	3,834		3,725		3,882		3,709
Dilutive effect of convertible debt	16,496		5,722		14,216		6,687
Weighted average common and potential common shares outstanding	219,089		204,405		215,943		204,553
Basic net income per common share	$	0.53	$	0.05	$	1.43	$	0.35
Diluted net income per common share	$	0.48	$	0.05	$	1.31	$	0.33