FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Jun. 30, 2011

Fair Value Disclosures [Abstract]

Fair Value Hierarchy of Financial Assets and Liabilities [Table Text Block]

Fair Values as of June 30, 2011:

(in thousands)	Level 1		Level 2		Level 3		Total
Cash	$	121,226	$	—	$	—	$	121,226
Money Market Accounts	41,500		—		—		41,500
U.S. Treasury Bills and Government Agency Securities	61,688		43,662		—		105,350
Commercial Paper	—		55,776		—		55,776
Corporate Bonds	—		55,016		—		55,016
CDs	—		7,399		—		7,399
Derivative assets	—		777		—		777
Total assets measured at fair value	$	224,414	$	162,630	$	—	$	387,044
Derivative liabilities	$	37	$	3,279	$	—	$	3,316

Fair Values as of March 31, 2011:

(in thousands)	Level 1		Level 2		Level 3		Total
Cash	$	136,804	$	—	$	—	$	136,804
Money Market Accounts	38,000		—		—		38,000
U.S. Treasury Bills and Government Agency Securities	154,703		43,543		—		198,246
Commercial Paper	—		52,568		—		52,568
Corporate Bonds	—		33,358		—		33,358
CDs	—		10,312		—		10,312
Derivative assets	—		360		—		360
Total assets measured at fair value	$	329,507	$	140,141	$	—	$	469,648
Derivative liabilities	$	27	$	4,174	$	—	$	4,201