Summary of Significant Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2013

Accounting Policies [Abstract]

Accounts receivable

	April 30, 2013			April 30, 2012
Trade receivables	$	2,962,000		$	2,621,000
VAT receivable		123,000			184,000
Allowance for doubtful accounts and sales returns		(200,000	)		(200,000	)
	$	2,885,000		$	2,605,000

Changes in goodwill

	2013			2012
Opening balance May 1	$	1,453,000		$	1,242,000
Contingently purchase price		68,000			211,000
Impairment charge		(438,000	)		—
Goodwill balance April 30	$	1,083,000		$	1,453,000

The components of finite-lived intangible assets acquired

As of April 30, 2013, the components of finite-lived intangible assets acquired are as follows:

	Gross		Weighted				Net
	Carrying		Average		Accumulated		Carrying
	Amount		Life		Amortization		Amount
Customer relationships	$	758,000		2 Years	$	758,000	$	0
Trade names		733,000		5 Years		600,000		133,000
Non-compete agreement		68,000		4 Years		68,000		0
	$	1,559,000			$	1,426,000	$	133,000

As of April 30, 2012, the components of finite-lived intangible assets acquired were as follows:

	Gross		Weighted				Net
	Carrying		Average		Accumulated		Carrying
	Amount		Life		Amortization		Amount
Customer relationships	$	758,000		2 Years	$	758,000	$	0
Trade names		733,000		5 Years		451,000		282,000
Non-compete agreement		68,000		4 Years		53,000		15,000
	$	1,559,000			$	1,262,000	$	297,000

The estimated future amortization expense related to intangible assets

Year ending April 30:
	2014	$	133,000
		$	133,000

The assets and liabilities measured at fair value on a nonrecurring basis, by input level, in the consolidated balance sheet

	Quoted Prices
	in Active	Significant			Total
	Markets for	Other	Significant		Reduction
	Identical Assets	Observable	Unobservable		in Fair value
Balance Sheet	or Liabilities	Inputs	Inputs	April 30, 2013	Recorded at
Location	(Level 1)	(Level 2)	(Level 3)	Total	April 30, 2013
Assets:
Goodwill	$      -	$      -	$  1,083,000	$ 1,083,000	$ (438,000)

Reconciliation of the numerator and denominator used in computing basic and diluted net loss per share

	Year ended April 30, 2013
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share-net loss and weighted average common shares outstanding	$	(4,625,000	)		1,776,796	$	(2.60	)
Effect of dilutive securities-stock options		—			—		—
Diluted net loss per share -net loss weighted average common shares outstanding and effect of stock options	$	(4,625,000	)		1,776,796	$	(2.60	)

		Year ended April 30, 2012
		Loss		Shares		Per share
		(numerator)		(denominator)		amount
Basic net loss per share-net loss and weighted average common shares outstanding	$	(3,259,000	)	1,770,952	$	(1.84	)
Effect of dilutive securities-stock options		-		-		-
Diluted net loss per share-net loss weighted average common shares outstanding and effect of stock options	$	(3,259,000	)	1,770,952	$	(1.84	)

		Year ended April 30, 2011
		Loss		Shares		Per share
		(numerator)		(denominator)		amount
Basic net loss per share-net loss and weighted average common shares outstanding	$	(4,633,000	)	1,487,211	$	(3.11	)
Effect of dilutive securities-stock options		-		-		-
Diluted net loss per share-net loss, weighted average common shares outstanding and effect of stock options	$	(4,633,000	)	1,487,211	$	(3.11	)

Product warranty accruals

	Balance		Charges to							Balance
	Beginning		Costs and							End
	of Year		Expenses		Other		Deductions			of Year
Year Ended
April 30, 2013	$	79,000		14,000		-		(24,000	)	$	69,000
Year Ended
April 30, 2012	$	79,000		6,000		-		(6,000	)	$	79,000
Year Ended
April 30, 2011	$	79,000		1,000		-		(1,000	)	$	79,000

Summary of option activity

						Weighted
				Weighted		average		Aggregate
				average		remaining		intrinsic
	Shares			exercise price		contractual life		value(1)
Balance April 30, 2012		290,983		$	14.04		5.29	$	-
Granted		41,667		$	3.12		-		-
Exercised		-			-		-		-
Expired		(21,075	)	$	16.65		-		-
Balance April 30, 2013		311,575		$	12.40		5.02		-
Exercisable April 30, 2013		257,325		$	14.10		4.66		-
Expected to vest April 30, 2013		272,000		$	12.40		5.02		-

The fair value of each stock option granted during the year

	2013		2012		2011
Expected life (years)		3.0 to 5.75		3.0 to 3.3		3.0 to 6.0
Expected volatility		77%		77%		56% to 79%
Expected dividend yield		-		-		-
Expected forfeiture rate		5.0%		5.0%		5.0%
Risk-free interest rate		0.5% to 0.6%		0.5% to 0.6%		0.7% to 2.9%
Weighted average fair value of options granted during the year		$ 0.90		$ 0.56		$ 1.07