Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Apr. 30, 2014 CompensationPlan Group Segment	Apr. 30, 2013	Apr. 30, 2012
Accounting Policies [Line Items]
Number of major business segments	3
Number of major product and service groups	4
Amounts received for reimbursement of travel and other out-of-pocket expenses	$ 2,273,000	$ 2,239,000	$ 1,903,000
Unbilled amounts	3,234,000	3,741,000
Cash equivalents	51,600,000	37,700,000
Total amounts of expense/(recovery) to operations for doubtful accounts	(56,000)	216,000	238,000
Depreciation and amortization expense	1,056,000	1,076,000	1,183,000
Amortization of acquisition-related intangibles	472,000	501,000	535,000
Number of stock compensation plans	4
Stock-based compensation expense	1,509,000	1,476,000	1,287,000
Income tax benefit	496,000	436,000	339,000
Excess tax benefits from stock-based compensation	611,000	131,000	616,000
Advertising expense	2,200,000	2,000,000	1,800,000
Number of reportable segments	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	472,000
Cost of License Fees
Accounting Policies [Line Items]
Amortization of acquisition-related intangibles	88,000
Finite-Lived Intangible Assets
Accounting Policies [Line Items]
Amortization of acquisition-related intangibles	561,000	501,000	535,000
Class A Common Shares
Accounting Policies [Line Items]
Dividends preference, per share	$ 0.05
Logility Stock
Accounting Policies [Line Items]
Amortization expense for fiscal 2015	6,000
Logility Stock | Acquired Software
Accounting Policies [Line Items]
Amortization of acquisition-related intangibles	64,000	75,000	82,000
Unbilled License Fees
Accounting Policies [Line Items]
Unbilled amounts	1,100,000	1,100,000
Unbilled Services Revenues
Accounting Policies [Line Items]
Unbilled amounts	$ 2,200,000	$ 2,700,000
Minimum
Accounting Policies [Line Items]
Contractual period to use software applications	36 months
Contractual period of maintenance contract	1 year
Minimum | Other Intangible Assets
Accounting Policies [Line Items]
Intangible assets amortized period	2 years
Maximum
Accounting Policies [Line Items]
Contractual period to use software applications	60 months
Contractual period of maintenance contract	3 years
Cash equivalents original maturity period	3 months
Maximum | Other Intangible Assets
Accounting Policies [Line Items]
Intangible assets amortized period	6 years