Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
State and Municipal Obligations (included in Securities Available for Sale)		$ 1,511
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds (included in Cash and Cash Equivalents)		1,798
State and Municipal Obligations (included in Securities Available for Sale)		1,511
Swap Contract (included in Other Assets)	$ 85	101
Total assets	85	3,410
Swap Contract (included in Other Liabilities)	600	1,513
Earnout Liability (included in Other Liabilities)	14	15
Total liabilities	614	1,528
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds (included in Cash and Cash Equivalents)		1,798
Total assets		1,798
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
State and Municipal Obligations (included in Securities Available for Sale)		1,511
Swap Contract (included in Other Assets)	85	101
Total assets	85	1,612
Swap Contract (included in Other Liabilities)	600	1,513
Total liabilities	600	1,513
Fair Value, Measurements, Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earnout Liability (included in Other Liabilities)	14	15
Total liabilities	$ 14	$ 15

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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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

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Fair value as of the balance sheet date of all derivative assets designated as interest rate fair value hedging instruments.

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Fair value of financial and nonfinancial obligations.

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