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Intangible Assets - Additional Information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Other direct cost of revenues | $ 453,000 | $ 437,000 | $ 430,000 | $ 409,000 | $ 1,217,000 | $ 451,000 | $ 454,000 | $ 453,000 | $ 1,416,000 | $ 1,731,000 | $ 7,477,000
Amortization expense after year one | $ 0 |  |  |  |  |  |  |  | $ 0 |  |

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- Definition Finite-Lived Intangible Assets, Amortization Expense, After Year One + References No definition available. + Details
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Namespace Prefix: | apps_
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- Definition Amortization of property, plant and equipment directly related to goods produced and sold and services rendered by an entity during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- References No definition available. + Details
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