Note 17 Commitments and Contingencies (Narratives) (Details) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Commitments and Contingencies [Abstract]
Capital Leases Expiration Year	fiscal 2016
Capital Leases Interest Rate, Minimum	3.60%
Capital Leases Interest Rate, Maximum	6.00%
Operating Leases Expiration Year	2023
Operating Leases, Rent Expense, Net	$ 1,300,000	$ 1,700,000	$ 2,100,000
Restricted Cash	314,000	509,000
Bank of West Original Arrangement November 13 2009 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Initiation Date	Nov. 13, 2009
Line of Credit Facility, Expiration Date	Oct. 31, 2011
Line of Credit Facility, Maximum Borrowing Capacity	15,000,000
Bank of West Extended Arrangement December 29 2010 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Initiation Date	Dec. 29, 2010
Line of Credit Facility, Expiration Date	Oct. 31, 2013
Line of Credit Facility, Maximum Borrowing Capacity	20,000,000
Bank of West [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Initiation Date	Dec. 29, 2010
Line of Credit Facility, Expiration Date	Oct. 31, 2013
Line of Credit Facility, Amount Outstanding	15,000,000
Line of Credit Facility, Maximum Borrowing Capacity	20,000,000
Available Credit Line for Letter of Credit	$ 3,000,000