Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Mar. 31, 2011
Current assets:
Reserve for returns, allowances and provision for doubtful accounts	$ 8,583	$ 8,462
Stockholders' equity:
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	255,602,000	255,602,000
Common stock, shares outstanding (in shares)	255,602,000	255,602,000
Nonredeemable Preferred [Member]
LIABILITIES, PREFERRED STOCK AND STOCKHOLDERS' EQUITY
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	30,000.0	30,000.0
Preferred stock, shares issued (in shares)	22,600	22,600
Preferred stock, shares outstanding (in shares)	22,600	22,600
Preferred stock, liquidation preference	$ 26,900	$ 26,100
Convertible Preferred [Member]
LIABILITIES, PREFERRED STOCK AND STOCKHOLDERS' EQUITY
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	67,933.4	67,933.4
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0