Segment Information (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2017	Jan. 31, 2016
Segment Reporting Information [Line Items]
Revenues		$ 26,441	$ 27,095	$ 80,020	$ 85,023
Operating income(loss)		2,455	2,518	4,809	9,666
Capital expenditures		172	240	500	481
Capitalized Software		865	692	2,471	2,681
Depreciation and amortization		2,000	1,399	5,045	4,217
Earnings (loss) before income taxes		3,480	2,324	6,328	9,908
Enterprise Resource Planning
Segment Reporting Information [Line Items]
Revenues		2,884	3,291	8,649	9,875
Operating income(loss)		(1,962)	(1,799)	(6,751)	(5,579)
Capital expenditures		117	188	283	332
Depreciation and amortization		92	146	420	445
Earnings (loss) before income taxes	[1]	(73)	(1,105)	(2,546)	(2,891)
Collaborative Supply Chain Management
Segment Reporting Information [Line Items]
Revenues		18,449	18,339	55,985	56,179
Operating income(loss)		4,087	4,114	10,895	13,880
Capital expenditures		55	52	217	149
Capitalized Software		865	692	2,471	2,681
Depreciation and amortization		1,906	1,251	4,619	3,765
Earnings (loss) before income taxes		3,224	3,255	8,176	11,523
IT Consulting
Segment Reporting Information [Line Items]
Revenues		5,108	5,465	15,386	18,969
Operating income(loss)		330	203	665	1,365
Depreciation and amortization		2	2	6	7
Earnings (loss) before income taxes		329	174	698	1,276
Operating Segments
Segment Reporting Information [Line Items]
Operating income(loss)		2,455	2,518	4,809	9,666
Operating Segments | Enterprise Resource Planning
Segment Reporting Information [Line Items]
Operating income(loss)		(1,116)	(1,049)	(4,146)	(3,394)
Operating Segments | Collaborative Supply Chain Management
Segment Reporting Information [Line Items]
Operating income(loss)		3,241	3,393	8,257	11,784
Operating Segments | IT Consulting
Segment Reporting Information [Line Items]
Operating income(loss)		330	174	698	1,276
Intersegment Eliminations | Enterprise Resource Planning
Segment Reporting Information [Line Items]
Operating income(loss)		(846)	(750)	(2,605)	(2,185)
Intersegment Eliminations | Collaborative Supply Chain Management
Segment Reporting Information [Line Items]
Operating income(loss)		$ 846	721	2,638	2,096
Intersegment Eliminations | IT Consulting
Segment Reporting Information [Line Items]
Operating income(loss)			$ 29	$ (33)	$ 89

[1] includes certain unallocated expenses.