Note 7. Long-Term Debt - Related Party (Details) - Debt Cost Expense and Interest Expense Related to Outstanding Borrowings (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Note 7. Long-Term Debt - Related Party (Details) - Debt Cost Expense and Interest Expense Related to Outstanding Borrowings [Line Items]
Debt cost expense (1)	$ 272		$ 372
Interest expense	503		489
Related Party [Member]
Note 7. Long-Term Debt - Related Party (Details) - Debt Cost Expense and Interest Expense Related to Outstanding Borrowings [Line Items]
Debt cost expense (1)	272	[1]	372	[1]
Interest expense	$ 488		$ 470

[1] Expense through September 19, 2012.