Segment Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Segment Reporting Information [Line Items]
Revenues	$ 25,839us-gaap_SalesRevenueNet	$ 24,427us-gaap_SalesRevenueNet	$ 75,273us-gaap_SalesRevenueNet	$ 74,676us-gaap_SalesRevenueNet
Operating income (loss)	2,375us-gaap_OperatingIncomeLoss	3,539us-gaap_OperatingIncomeLoss	5,917us-gaap_OperatingIncomeLoss	11,314us-gaap_OperatingIncomeLoss
Capital expenditures	740	50	972	205
Capitalized software	879	761	1,725	2,402
Depreciation and amortization	1,472	435	4,311	1,897
Earnings (loss) before income taxes	2,295	3,737	6,632	11,973
Enterprise Resource Planning
Segment Reporting Information [Line Items]
Revenues	2,997	2,630	8,607	8,678
Operating income (loss)	(1,712)	(2,009)	(5,397)	(5,062)
Capital expenditures	703	24	769	117
Depreciation and amortization	241	222	698	663
Earnings (loss) before income taxes	(1,032)	(1,224)	(2,695)	(2,961)
Supply Chain Management
Segment Reporting Information [Line Items]
Revenues	16,302	15,908	48,033	47,043
Operating income (loss)	3,555	5,179	9,603	14,659
Capital expenditures	37	26	203	78
Capitalized software	879	761	1,725	2,402
Depreciation and amortization	1,229	210	3,605	1,225
Earnings (loss) before income taxes	2,824	4,616	7,694	13,293
IT Consulting
Segment Reporting Information [Line Items]
Revenues	6,540	5,889	18,633	18,955
Operating income (loss)	532	369	1,711	1,717
Capital expenditures				10
Depreciation and amortization	2	3	8	9
Earnings (loss) before income taxes	503	345	1,633	1,641
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	2,375	3,539	5,917	11,314
Operating Segments \| Enterprise Resource Planning
Segment Reporting Information [Line Items]
Operating income (loss)	(1,192)	(1,522)	(3,792)	(3,682)
Operating Segments \| Supply Chain Management
Segment Reporting Information [Line Items]
Operating income (loss)	3,064	4,716	8,076	13,352
Operating Segments \| IT Consulting
Segment Reporting Information [Line Items]
Operating income (loss)	503	345	1,633	1,644
Intersegment Eliminations \| Enterprise Resource Planning
Segment Reporting Information [Line Items]
Operating income (loss)	(520)	(487)	(1,605)	(1,380)
Intersegment Eliminations \| Supply Chain Management
Segment Reporting Information [Line Items]
Operating income (loss)	491	463	1,527	1,307
Intersegment Eliminations \| IT Consulting
Segment Reporting Information [Line Items]
Operating income (loss)	$ 29	$ 24	$ 78	$ 73

Additions made to capitalized computer software costs during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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