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Revenue Recognition Contract Costs (Details) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2018 USD ($) | Jun. 30, 2018 USD ($)
Revenue Recognition [Abstract] |  |
Capitalized contract cost amortization term |  | 5 years
Capitalized contract cost | $ 9.3 | $ 9.3
Amortization associated with capitalized costs | $ 0.8 | $ 1.5

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- Definition Period which we amortize capitalized costs that are related to services that are transferred over a contract term. This amortization is consistent with the pattern of transfer of the service to which the assets relate. + References No definition available. + Details
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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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- References No definition available. + Details
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