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INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jul. 31, 2016
Jul. 31, 2015
Segment Reporting, Revenue Reconciling Item [Line Items]    
Revenues [1] $ 12,208 $ 9,575
Net income (loss) from operations [1] 630 (1,179)
Provision (benefit) for income taxes [1] 337 (725)
Interest expense (income), net [1] 224 379
Depreciation and amortization [1] 367 746
EBITDA [1],[2] 1,558 (779)
Capital expenditures [1] 39 82
Fulfillment Services [Member]    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Revenues [1] 4,370 168
Net income (loss) from operations [1] 247 (766)
Provision (benefit) for income taxes [1] 145 (454)
Interest expense (income), net [1] 647 671
Depreciation and amortization [1] 24 23
EBITDA [1],[2] 1,063 (526)
Capital expenditures [1] 0 0
Real Estate Operations [Member]    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Revenues [1] 7,828 9,181
Net income (loss) from operations [1] (42) (776)
Provision (benefit) for income taxes [1] (25) (456)
Interest expense (income), net [1] 269 167
Depreciation and amortization [1] 343 716
EBITDA [1],[2] 545 (349)
Capital expenditures [1] 39 82
Corporate and Other [Member]    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Revenues [1] 10 226
Net income (loss) from operations [1] 425 363
Provision (benefit) for income taxes [1] 217 185
Interest expense (income), net [1] (692) (459)
Depreciation and amortization [1] 0 7
EBITDA [1],[2] (50) 96
Capital expenditures [1] $ 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] 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.