Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Allowances (in Dollars)	$ 113	$ 58
Preferred Stock Par Value (in Dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Authorized Shares	5,000,000	5,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par Value (in Dollars per share)	$ 0.01	$ 0.01
Common Stock, Authorized Shares	75,000,000	75,000,000
Common Stock, Shares Issued	46,249,000	45,396,000
Treasury Stock, Shares	34,000	7,000