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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Significant Accounting Policies [Line Items] |  |  |
Restricted cash | $ 331 | $ 331 |
Deposits | 151 | 121 |
Software costs capitalized | 1,641 | 1,387 | $ 1,263
Foreign currency translation adjustment | (4) | $ (119) | (150)
XYO |  |  |
Significant Accounting Policies [Line Items] |  |  |
Impairment | $ 757 |  |
Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Intangible assets acquired, useful life | 2 years |  |
Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Intangible assets acquired, useful life | 14 years |  |
Leasehold improvements | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful lives | 8 years |  |
Leasehold improvements | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful lives | 10 years |  |
Other assets | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful lives | 3 years |  |
Other assets | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful lives | 5 years |  |
Customer A | Accounts Receivable |  |  |
Significant Accounting Policies [Line Items] |  |  |
Concentrations of credit risk, percentage | 28.30% | 17.80% |
Customer A | Sales |  |  |
Significant Accounting Policies [Line Items] |  |  |
Concentrations of credit risk, percentage | 23.50% | 26.10% |
Customer B | Accounts Receivable |  |  |
Significant Accounting Policies [Line Items] |  |  |
Concentrations of credit risk, percentage |  | 16.20% |
Customer B | Sales |  |  |
Significant Accounting Policies [Line Items] |  |  |
Concentrations of credit risk, percentage | 16.10% | 21.90% |
Customer C | Accounts Receivable |  |  |
Significant Accounting Policies [Line Items] |  |  |
Concentrations of credit risk, percentage |  | 10.70% |
Customer C | Sales |  |  |
Significant Accounting Policies [Line Items] |  |  |
Concentrations of credit risk, percentage |  | 15.90% |
O&O |  |  |
Significant Accounting Policies [Line Items] |  |  |
Advertising expense | $ 83 | $ 263 | $ 396

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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