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Revenues - Narrative (Details) - USD ($) $ in Millions | Jun. 30, 2019 | Dec. 31, 2018
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Revenue Receivable from Contract With Customers |  |
Revenues Receivable from Customer |  |
Revenues receivable | $ 23.3 | $ 31.8

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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
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Balance Type: | debit
Period Type: | instant

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- Details
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