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Segment Information (Tables)
12 Months Ended
Mar. 31, 2013
Segment Information [Abstract]  
Schedule Of Revenue By Major Customers
Schedule Of Revenue By Geographic Region
Year Ended March 31
2013 2012 2011
United States $ 12,006,493 $ 13,334,563 $ 14,169,952
Europe 10,666,338 10,798,146 12,009,294
Asia 3,979,862 4,130,930 4,576,270
Other 380,726 315,581 441,547
Total Revenue $ 27,033,419 $ 28,579,220 $ 31,197,063