UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2012	Jan. 31, 2011
Net loss	$ (1,719)	$ (415)	$ (6,111)	$ (1,060)
Foreign currency translation adjustment	(13)	12	2	(14)
Comprehensive loss	$ (1,732)	$ (403)	$ (6,109)	$ (1,074)