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Commitments and Contingencies - Hosting, Telecommunications Usuage and Maintenance Services (Details) $ in Thousands | Dec. 31, 2017 USD ($)
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Hosting Services |
Unrecorded Unconditional Purchase Obligation [Line Items] |
2018 | $ 855
2019 | 36
2020 | 23
Total future minimum payment | 914
Telecommunication Usage Services |
Unrecorded Unconditional Purchase Obligation [Line Items] |
2018 | 2,355
2019 | 1,505
2020 | 90
Total future minimum payment | 3,950
Equipment Maintenance Services |
Unrecorded Unconditional Purchase Obligation [Line Items] |
2018 | 426
2019 | 93
2020 | 17
Total future minimum payment | $ 536

X
- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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X
- Definition Minimum amount of purchase arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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Period Type: | instant

X
- Definition Minimum amount of purchase arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
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X
- Definition 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. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
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Period Type: |