Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2015
Segment Reporting Information [Line Items]
Revenues	$ 26,266	$ 26,441	$ 26,146	$ 27,433	$ 28,866	$ 27,095	$ 29,070	$ 28,858	$ 106,286	$ 113,889	$ 102,873
Operating income(loss)	2,957	$ 2,455	$ 708	$ 1,646	3,861	$ 2,518	$ 3,328	$ 3,820	7,766	13,527	9,342
Capital expenditures									731	655	1,028
Capitalized Software									3,724	3,246	2,747
Depreciation and amortization									6,640	5,618	5,833
Interest income									1,257	1,346	1,229
Earnings (loss) before income taxes									21,615	14,700	10,402
Total Consolidated Assets	148,774				136,724				148,774	136,724	134,266
Enterprise Resource Planning
Segment Reporting Information [Line Items]
Revenues									11,828	13,647	11,363
Operating income(loss)									(8,760)	(7,119)	(7,412)
Capital expenditures									408	423	791
Depreciation and amortization									492	587	925
Interest income									440	376	421
Earnings (loss) before income taxes									8,515	(2,771)	(3,815)
Total Consolidated Assets	49,333				33,555				49,333	33,555	32,435
Supply Chain Management
Segment Reporting Information [Line Items]
Revenues									74,825	76,329	66,066
Operating income(loss)									15,670	19,214	14,419
Capital expenditures									321	232	229
Capitalized Software									3,724	3,246	2,747
Depreciation and amortization									6,141	5,021	4,896
Interest income									817	970	808
Earnings (loss) before income taxes									12,210	16,144	11,989
Total Consolidated Assets	95,385				98,650				95,385	98,650	97,101
IT Consulting
Segment Reporting Information [Line Items]
Revenues									19,633	23,913	25,444
Operating income(loss)									856	1,432	2,335
Capital expenditures									2		8
Depreciation and amortization									7	10	12
Earnings (loss) before income taxes									890	1,327	2,228
Total Consolidated Assets	$ 4,056				$ 4,519				4,056	4,519	4,730
Operating Segments
Segment Reporting Information [Line Items]
Operating income(loss)									7,766	13,527	9,342
Operating Segments | Enterprise Resource Planning
Segment Reporting Information [Line Items]
Operating income(loss)									(5,388)	(4,104)	(5,285)
Operating Segments | Supply Chain Management
Segment Reporting Information [Line Items]
Operating income(loss)									12,264	16,304	12,399
Operating Segments | IT Consulting
Segment Reporting Information [Line Items]
Operating income(loss)									890	1,327	2,228
Intersegment Eliminations | Enterprise Resource Planning
Segment Reporting Information [Line Items]
Operating income(loss)									(3,372)	(3,015)	(2,127)
Intersegment Eliminations | Supply Chain Management
Segment Reporting Information [Line Items]
Operating income(loss)									3,406	2,910	2,020
Intersegment Eliminations | IT Consulting
Segment Reporting Information [Line Items]
Operating income(loss)									$ (34)	$ 105	$ 107