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Fair Value Measurements - Additional Information (Detail) (USD $)
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12 Months Ended | ||
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Jan. 31, 2015
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Jan. 31, 2014
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Jan. 31, 2013
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| Fair Value Disclosures [Abstract] | |||
| Maximum maturity of marketable securities | Three months or less | ||
| Other than temporary declines in investments | $ 0us-gaap_ImpairmentOfInvestments | $ 0us-gaap_ImpairmentOfInvestments | $ 0us-gaap_ImpairmentOfInvestments |
| Escrow agreement fund | 2,500,000us-gaap_EscrowDeposit | ||
| Escrow reserve | 1,100,000us-gaap_ReplacementReserveEscrow | ||
| Acquisition date | Feb. 02, 2015 | ||
| Cash equivalents and marketable securities | $ 105,400,000seac_AggregateCashCashEquivalentsShortTermInvestmentsAndRestrictedCash | $ 128,100,000seac_AggregateCashCashEquivalentsShortTermInvestmentsAndRestrictedCash | |
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- Definition
Aggregate cash, cash equivalents, short term investments and restricted cash. No definition available.
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- Definition
Cash Equivalents Maximum Maturity Period No definition available.
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- Definition
Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents those amounts set aside for the repair and replacement of real or personal property in the foreseen future. Such amount may be funded from sales revenue (for example; timeshare sales) or operating revenues; in a lump sum or installments (such as monthly); as per internal policy (for example: hotel operators), as required by contractual agreement (for example: sales contract); or by the terms of debt agreements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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