Summary of Significant Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2015

Accounting Policies [Abstract]

Accounts receivable

	April 30, 2015			April 30, 2014
Trade receivables	$	2,151,000		$	3,758,000
VAT receivable		160,000			125,000
Allowance for doubtful accounts and sales returns		(140,000	)		(220,000	)
	$	2,171,000		$	3,663,000

Changes in goodwill

	2015		2014
Opening balance May 1	$	1,083,000	$	1,083,000
Contingent purchase price		—		—
Impairment charge		—		—
Goodwill balance April 30	$	1,083,000	$	1,083,000

The components of finite-lived intangible assets acquired

	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		733,000		0
Non-compete agreement		68,000	4 Years		68,000		0
	$	1,559,000		$	1,559,000	$	0

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

	Quoted								Total
	Prices in								Reduction
	Active Markets for		Significant Other		Significant				in Fair value
Balance Sheet	Identical Assets or		Observable Inputs		Unobservable		April 30, 2015		Recorded as of
Location	Liabilities (Level 1)		(Level 2)		Inputs     (Level 3)		Total		April 30, 2015
Assets:
Goodwill	$	—	$	—	$	1,083,000	$	1,083,000	$	—
Convertible notes payable, net of discount	$	—	$	708,000	$	—	$	708,000	$	—
Preferred stock	$	—	$	1,857,000	$	—	$	1,857,000	$	—

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

	Year ended April 30, 2015
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share-net loss and weighted average common shares outstanding	$	(5,588,000	)		2,538,511	$	(2.20	)
Effect of dilutive securities-stock options		—			—		—
Diluted net loss per share-net loss, weighted average common shares outstanding and effect of stock options	$	(5,588,000	)		2,538,511	$	(2.20	)

	Year ended April 30, 2014
	Loss			Shares		Per share
	(numerator)			(denominator)		amount
Basic net loss per share-net loss and weighted average common shares outstanding	$	(2,609,000	)		1,999,856	$	(1.30	)
Effect of dilutive securities-stock options		—			—		—
Diluted net loss per share -net loss weighted average common shares outstanding and effect of stock options	$	(2,609,000	)		1,999,856	$	(1.30	)

Product warranty accruals

	Balance		Charges to					Balance
	Beginning		Costs and					End
	of Year		Expenses		Deductions			of Year
Year Ended April 30, 2015	$	69,000	$	11,000	$	(70,000	)	$	10,000
Year Ended April 30, 2014	$	69,000	$	9,000	$	(9,000	)	$	69,000

Summary of option activity

						Weighted
				Weighted		average		Aggregate
				average		remaining		intrinsic
	Shares			exercise price		contractual life		value(1)
Balance April 30, 2014		264,244		$	12.42		4.46	$	6,250
Granted
Exercised
Expired		(138,498	)	$	16.00		—		—
Balance April 30, 2015		125,746		$	8.48		3.59	$	—
Exercisable April 30, 2015		125,746		$	8.48		3.59	$	—
Vested April 30, 2015		125,746		$	8.48		3.59	$	—

The fair value of each stock option granted during the year

	2015		2014		2013
Expected life (years)						3.0 to 5.75
Expected volatility						77%
Expected dividend yield		—		—		—
Expected forfeiture rate		—		—		5.0%
Risk-free interest rate		—		—		0.5% to 0.6%
Weighted average fair value of options granted during the year	$	—	$	—	$	0.90