Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Jan. 31, 2012	Jan. 31, 2011
Cash flows from operating activities:
Net loss	$ (6,215,443)	$ (3,792,375)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	525,699	779,646
Bad debt expense (recovery)	17,885	(4,444)
Stock-based compensation expense	378,523	461,416
Gain on sale of property and equipment		(2,472)
Impairment of software development costs	2,387,241
Changes in assets and liabilities:
Decrease in accounts receivable	1,849,199	1,775,567
Decrease in inventories	2,138,100	1,763,709
Decrease (increase) in other current assets	30,992	(241,241)
Decrease in other assets	29,150	21,624
Decrease in accounts payable	(2,239,106)	(1,324,099)
Increase (decrease) in accrued liabilities	18,427	(1,033,312)
Net cash used in operating activities	(1,079,333)	(1,595,981)
Cash flows from investing activities:
Acquisition of business	(211,053)	(432,074)
Additions to property and equipment	(223,948)	(135,210)
Software development cost	(907,069)	(768,024)
Proceeds from sale of property and equipment		9,985
Net cash used in investing activities	(1,342,070)	(1,325,323)
Cash flows from financing activities:
Net proceeds (payments) of borrowings under revolving credit line	(683,051)	1,366,934
Net proceeds (payments) of note payable to related party	500,000	(500,000)
Net proceeds from sale of common shares under stock option plan		12,800
Net proceeds from sale of common stock	2,997,875
Net cash provided by financing activities	2,814,824	879,734
Net increase (decrease) in cash and cash equivalents	393,421	(2,041,570)
Cash and cash equivalents at beginning of period	345,105	2,507,456
Cash and cash equivalents at end of period	738,526	465,886
Supplemental disclosure of non-cash financing activities:
Borrowings from and repayments to related party	1,500,000
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	277,212	179,273
Cash paid during the period for income taxes	$ 4,881	$ 5,116