Financial Information by Geographic Location (Tables)

3 Months Ended

Jan. 31, 2013

Segment Reporting [Abstract]

Revenue by geographic location

	Three months ended January 31, 2013		Nine months ended January 31, 2013
United States	$	4,572,914	$	16,553,265
Europe		1,217,323		3,167,483
Other (principally Asia Pacific Region)		648,724		1,675,721
Consolidated	$	6,438,961	$	21,396,469

	Three months ended January 31, 2012		Nine months ended January 31, 2012
United States	$	6,091,393	$	23,357,207
Europe		1,463,481		3,886,481
Other (principally Asia Pacific Region)		865,261		1,852,261
Consolidated	$	8,420,135	$	29,095,949