Basis of Financial Statement Presentation (Tables)

3 Months Ended

Jun. 30, 2012

Basis of Financial Statement Presentation

Schedule of assets and liabilities measured at fair value on a recurring basis

	Carrying Value June		Fair Value June 30,		Fair Value Measurement Using						Carrying Value March 31,		Fair Value March 31,		Fair Value Measurement Using
	30, 2012		2012		Level 1		Level 2 (2)		Level 3		2012		2012		Level 1		Level 2 (2)		Level 3
Assets:
Money markets (1)	$	26,227	$	26,227	$	26,227	$	—	$	—	$	26,215	$	26,215	$	26,215	$	—	$	—
Long-term debt	361,286		369,349		367,425		1,924		—		347,331		362,086		358,700		3,386		—

(1)       Included in the line item “Cash and cash equivalents” on the Condensed Consolidated Balance Sheets.

(2)       The valuation approach used to calculate fair value was a discounted cash flow for each respective debt facility.

Schedule of components of inventories

	June 30, 2012			March 31, 2012
Raw materials and supplies	$	86,673		$	86,845
Work in process	82,513			72,411
Finished goods	64,343			70,122
	233,529			229,378
Inventory reserves	(17,226		)	(17,144		)
	$	216,303		$	212,234