INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Jan. 31, 2017		Jan. 31, 2016	Jan. 31, 2017		Jan. 31, 2016
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	[1]	$ 9,777		$ 12,198	$ 33,450		$ 32,994
Net income (loss) from operations	[1]	174		(569)	916		(2,424)
Provision (benefit) for income taxes	[1]	96		(237)	441		(1,392)
Interest expense (income), net	[1],[2]	22		342	328		1,085
Depreciation and amortization	[1]	341		715	1,058		2,168
Impairment of real estate assets		150	[1]	0	150	[1]	0
EBITDA	[1],[3]	783		251	2,893		(563)
Capital expenditures	[1]	14		384	63		655
Real Estate Operations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	[1]	1,518		3,254	9,485		5,678
Net income (loss) from operations	[1]	(425)		(468)	(580)		(1,825)
Provision (benefit) for income taxes	[1]	(249)		(287)	(340)		(1,088)
Interest expense (income), net	[1],[2]	521		577	1,742		1,844
Depreciation and amortization	[1]	20		23	64		68
Impairment of real estate assets	[1]	150			150
EBITDA	[1],[3]	17		(155)	1,036		(1,001)
Capital expenditures	[1]	0		0	0		0
Fulfillment Services [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	[1]	8,222		8,759	23,908		26,666
Net income (loss) from operations	[1]	95		(440)	21		(1,722)
Provision (benefit) for income taxes	[1]	54		(258)	16		(1,011)
Interest expense (income), net	[1],[2]	274		263	811		612
Depreciation and amortization	[1]	321		599	994		1,992
Impairment of real estate assets	[1]	0			0
EBITDA	[1],[3]	744		164	1,842		(129)
Capital expenditures	[1]	14		384	63		655
Corporate and Other [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	[1]	37		185	57		650
Net income (loss) from operations	[1]	504		339	1,475		1,123
Provision (benefit) for income taxes	[1]	291		308	765		707
Interest expense (income), net	[1],[2]	(773)		(498)	(2,225)		(1,371)
Depreciation and amortization	[1]	0		93	0		108
Impairment of real estate assets	[1]	0			0
EBITDA	[1],[3]	22		242	15		567
Capital expenditures	[1]	$ 0		$ 0	$ 0		$ 0

[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 significant inter-segment interest expense (income) that is eliminated in consolidation.

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