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Dividends common stock stock percentage.

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Short-term, interest bearing highly-liquid investment-grade securities with maturities of 90 days or less when purchased.

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The number of individual customers accounting for more than the minimum threshold for the associated concentration risk percentage of an identified benchmark and type.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Original amount of cost-method investments at the acquisition date.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2016	Jun. 12, 2015	Jun. 30, 2014
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of shares authorized to repurchase		845,014us-gaap_TreasuryStockSharesAcquired	830,460us-gaap_TreasuryStockSharesAcquired	1,410,812us-gaap_TreasuryStockSharesAcquired
Share price		$ 31,798,000	$ 27,179,000	$ 30,727,000
Average price		$ 37.63	$ 32.73	$ 21.78
Maturities of short term investment interest-bearing securities		90 days
Investments approved by board of directors							2,000,000
Investment in private equity		1,400,000us-gaap_PaymentsToAcquireInvestments
Accounts receivable due period		30 days
Unbilled account receivables		12,357,000us-gaap_UnbilledReceivablesCurrent	11,922,000us-gaap_UnbilledReceivablesCurrent
Capitalized software development costs		21,327,000us-gaap_CapitalizedComputerSoftwareNet	19,360,000us-gaap_CapitalizedComputerSoftwareNet
Accumulated amortization of software development costs		61,012,000	53,734,000
Amortization period of computer software		5 years
Impairment of goodwill, intangible assets or other long-lived assets		0
Goodwill		36,814,000us-gaap_Goodwill	36,814,000us-gaap_Goodwill
Accumulated amortization of goodwill		2,069,000	2,069,000
Stock split ratio	2
Stock dividend percentage	100.00%
Stock dividend distribution date	Jun. 26, 2013
Stock dividend recording date	Jun. 12, 2013
Scenario, Forecast [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Investment in private equity					600,000
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Maximum customer risk percentage		10.00%	10.00%	10.00%
Number of customer		0	0	0
Credit Concentration Risk [Member] \| Accounts Receivable [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Maximum customer risk percentage		10.00%	10.00%
Number of customer		0	0
Fair Value, Inputs, Level 2 [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Transfer of assets		0
Fair Value, Inputs, Level 3 [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Transfer of assets		0
Subsequent Event [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of shares authorized to repurchase		182,113				182,113
Share price		$ 6,500,000				$ 6,500,000
Average price		$ 35.89				$ 35.89