INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Oct. 31, 2018		Oct. 31, 2017		Oct. 31, 2018		Oct. 31, 2017		Apr. 30, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	[1]	$ 9,608		$ 9,175		$ 21,323		$ 20,501
Net (loss) income	[1]	55		278		116		1,726
(Benefit) provision for income taxes	[1]	(47)		85		(99)		851
Interest expense (income), net	[1],[2]	7		18		12		31
Depreciation	[1]	286		314		573		635
EBITDA	[1],[3]	301		695		602		3,243
Capital expenditures	[1]	0		19		34		29
Total assets		104,618	[1]	107,022	[1]	104,618	[1]	107,022	[1]	$ 105,670
Real Estate
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	[1]	2,636		1,476		6,875		4,223
Net (loss) income	[1]	(466)		(577)		(977)		(397)
(Benefit) provision for income taxes	[1]	(163)		(338)		(343)		(204)
Interest expense (income), net	[1],[2]	592		524		1,177		1,048
Depreciation	[1]	23		17		44		35
EBITDA	[1],[3]	(14)		(374)		(99)		482
Capital expenditures	[1]	0		0		0		0
Total assets	[1]	74,196		74,233		74,196		74,233
Fulfillment Services [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	[1],[4]	6,941		7,673		14,386		16,234
Net (loss) income	[1],[4]	93		560		288		1,600
(Benefit) provision for income taxes	[1],[4]	26		289		81		825
Interest expense (income), net	[1],[2],[4]	296		293		587		596
Depreciation	[1],[4]	263		297		529		600
EBITDA	[1],[3],[4]	678		1,439		1,485		3,621
Capital expenditures	[1],[4]	0		19		34		29
Total assets	[1]	18,410		25,745		18,410		25,745
Corporate and Other [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	[1]	31		26		62		44
Net (loss) income	[1]	428		295		805		523
(Benefit) provision for income taxes	[1]	90		134		163		230
Interest expense (income), net	[1],[2]	(881)		(799)		(1,752)		(1,613)
Depreciation	[1]	0		0		0		0
EBITDA	[1],[3]	(363)		(370)		(784)		(860)
Capital expenditures	[1]	0		0		0		0
Total assets	[1]	$ 12,012		$ 7,044		$ 12,012		$ 7,044

[1] Revenue information provided for each segment includes amounts grouped as Other in the accompanying consolidated statements of operations. Corporate and Other is net of intercompany eliminations.

[2] Interest expense (income), net includes inter-segment interest expense (income) that is eliminated in consolidation.

[3] The Company uses EBITDA (which the Company defines as (loss) income before net interest expense, income taxes, depreciation and amortization, and non-cash impairment charges) in addition to net (loss) income as a key measure of profit or loss for segment performance and evaluation purposes.

[4] Fulfillment services revenues and EBITDA for the first six months of 2018 included a pre-tax gain of $1,318,000 resulting from the settlement agreement with the State of Florida (see Note 7).