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Summary of Significant Accounting Policies (Details) | 12 Months Ended
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Dec. 31, 2016 USD ($) segment | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Finite-Lived Intangible Assets [Line Items] |  |  |
Number of reportable segments for goodwill purposes | segment | 1 |  |
Property, Plant and Equipment [Abstract] |  |  |
Impairment of goodwill | $ 0 | $ 0 | $ 0
Impairment of long-lived assets | 0 | 0 | 0
Write off of deferred financing costs | $ 100,000 | 200,000 | 400,000
Revenue Recognition [Abstract] |  |  |
Maintenance agreements revenue recognition period (in years) | 1 year |  |
Advertising expenses | $ 59,000 | 347,000 | 283,000
Tax liability accrued in anticipation of future dividends from foreign subsidiaries | 0 |  |
Foreign currency transaction losses | $ 271,000 | 515,000 | 2,000
Minimum [Member] |  |  |
Revenue Recognition [Abstract] |  |  |
Subscription and support revenue recognition period (in years) | 1 year |  |
Hosting services arrangement period (in years) | 1 year |  |
Maximum [Member] |  |  |
Revenue Recognition [Abstract] |  |  |
Subscription and support revenue recognition period (in years) | 3 years |  |
Hosting services arrangement period (in years) | 3 years |  |
Trade Names [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Impairment of intangible asset | $ 0 | $ 0 | $ 0
Computer Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Estimated useful life (in years) | 3 years |  |
Computer Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Estimated useful life (in years) | 5 years |  |
Purchased Software and Licenses [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Estimated useful life (in years) | 3 years |  |
Purchased Software and Licenses [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Estimated useful life (in years) | 5 years |  |
Furniture and Fixtures [Member] |  |  |
Property, Plant and Equipment [Abstract] |  |  |
Estimated useful life (in years) | 7 years |  |

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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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