Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Segment Reporting Information [Line Items]
Revenues	$ 27,399	$ 26,886
Operating income (loss)	607	3,622
Capital expenditures	714	133
Capitalized Software	884	1,287
Depreciation and amortization	1,798	1,385
Earnings (loss) before income taxes	1,360	4,221
Supply Chain Management
Segment Reporting Information [Line Items]
Revenues	21,458	21,885
Operating income (loss)	3,067	5,869
Capital expenditures	72	24
Capitalized Software	884	1,287
Depreciation and amortization	1,727	1,334
Earnings (loss) before income taxes	3,049	5,074
IT Consulting
Segment Reporting Information [Line Items]
Revenues	5,357	4,369
Operating income (loss)	360	233
Capital expenditures	1	2
Depreciation and amortization	2	2
Earnings (loss) before income taxes	360	233
Other
Segment Reporting Information [Line Items]
Revenues	584	632
Operating income (loss)	(2,820)	(2,480)
Capital expenditures	641	107
Depreciation and amortization	69	49
Earnings (loss) before income taxes	(2,049)	(1,086)
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	607	3,622
Operating Segments | Supply Chain Management
Segment Reporting Information [Line Items]
Operating income (loss)	3,067	5,869
Operating Segments | IT Consulting
Segment Reporting Information [Line Items]
Operating income (loss)	360	233
Operating Segments | Other
Segment Reporting Information [Line Items]
Operating income (loss)	$ (2,820)	$ (2,480)