Presentation and Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Apr. 30, 2015 USD ($) Segment Group CompensationPlan $ / shares	Apr. 30, 2014 USD ($)	Apr. 30, 2013 USD ($)
Accounting Policies [Line Items]
Number of major business segments | Segment	3
Number of major product and service groups | Group	4
Amounts received for reimbursement of travel and other out-of-pocket expenses	$ 2,691,000	$ 2,273,000	$ 2,239,000
Unbilled amounts	3,585,000	3,234,000
Cash equivalents	43,000,000	51,600,000
Total amounts of expense/(recovery) to operations for doubtful accounts	178,000	(56,000)	216,000
Depreciation and amortization expense	1,193,000	1,056,000	1,076,000
Amortization of acquisition-related intangibles	394,000	472,000	501,000
Goodwill, impairment charge	$ 0
Number of stock compensation plans | CompensationPlan	4
Stock-based compensation expense	$ 1,530,000	1,509,000	1,476,000
Income tax benefit	542,000	496,000	436,000
Excess tax benefits from stock-based compensation	384,000	611,000	131,000
Advertising expense	$ 2,100,000	2,200,000	2,000,000
Number of reportable segments | Segment	3
Capitalized Software
Accounting Policies [Line Items]
Intangible assets amortized period	3 years
Computers Equipment and Software
Accounting Policies [Line Items]
Estimated useful lives of assets	3 years
Office furniture and equipment
Accounting Policies [Line Items]
Estimated useful lives of assets	7 years
Building
Accounting Policies [Line Items]
Estimated useful lives of assets	30 years
Operating Expense
Accounting Policies [Line Items]
Amortization of acquisition-related intangibles	$ 394,000	472,000
Cost of License Fees
Accounting Policies [Line Items]
Amortization of acquisition-related intangibles	576,000	88,000
Finite-Lived Intangible Assets
Accounting Policies [Line Items]
Amortization of acquisition-related intangibles	$ 970,000	561,000	501,000
Class A Common Shares
Accounting Policies [Line Items]
Dividends preference, per share | $ / shares	$ 0.05
Logility Stock | Acquired Software
Accounting Policies [Line Items]
Amortization of acquisition-related intangibles	$ 6,000	64,000	$ 75,000
Goodwill | Income approach | Discounted cash flow (DCF) methodology
Accounting Policies [Line Items]
Fair value input, valuation technique, weight	50.00%
Goodwill | Market approach | Comparable transaction methodology (CTM)
Accounting Policies [Line Items]
Fair value input, valuation technique, weight	15.00%
Goodwill | Market approach | Comparable company methodology (CCM)
Accounting Policies [Line Items]
Fair value input, valuation technique, weight	35.00%
Unbilled License Fees
Accounting Policies [Line Items]
Unbilled amounts	$ 1,400,000	1,100,000
Unbilled Services Revenues
Accounting Policies [Line Items]
Unbilled amounts	$ 2,100,000	$ 2,200,000
Minimum
Accounting Policies [Line Items]
Contractual period of maintenance contract	1 year
Contractual period to use software applications	36 months
Minimum | Other Intangible Assets
Accounting Policies [Line Items]
Intangible assets amortized period	2 years
Maximum
Accounting Policies [Line Items]
Contractual period of maintenance contract	3 years
Contractual period to use software applications	60 months
Cash equivalents original maturity period	3 months
Maximum | Other Intangible Assets
Accounting Policies [Line Items]
Intangible assets amortized period	6 years