Consolidated Balance Sheet Detail - Additional Information (Detail) - USD ($) $ in Thousands |
1 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|
Jan. 31, 2018 |
Apr. 30, 2017 |
Jan. 31, 2017 |
Jan. 31, 2018 |
Jan. 31, 2017 |
Jan. 31, 2016 |
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| Balance Sheet Related Disclosures [Line Items] | ||||||
| Depreciation and amortization expense | $ 2,273 | $ 2,953 | $ 3,380 | |||
| Loss on impairment of long-lived assets held for sale | $ 300 | 300 | ||||
| Proceeds from sale of facility held for sale | $ 100 | |||||
| Proceeds from sale of investment in affiliates | 4,555 | $ 464 | ||||
| Layer3 TV, Inc. [Member] | ||||||
| Balance Sheet Related Disclosures [Line Items] | ||||||
| Proceeds from sale of investment in affiliates | $ 4,600 | $ 4,600 | ||||
| Additional payment being held in escrow, related to sale of investment in affiliates | $ 2,100 | 2,100 | ||||
| Gain (loss) on investment in affiliates | $ 2,600 | $ 2,600 | ||||
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- Definition Balance sheet related disclosures. No definition available.
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- Definition This item represents the gain (loss) realized during the period from the sale of investments accounted for under the cost method of accounting and any losses recognized thereon for impairments of other than a temporary nature. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. 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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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or sale of an entity that is related to it but not strictly controlled. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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