Annual report pursuant to Section 13 and 15(d)

Leases (Details Textual)

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Leases (Details Textual) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Leases (Additional Textual) [Abstract]      
Operating leases expense $ 513 $ 478 $ 251
Machinery and equipment [Member]
     
Leases (Textual) [Abstract]      
Amortization of machinery and equipment under capital leases $ 84 $ 82 $ 72