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Leases (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Leases - right of use assets	$ 24.3	$ 24.3	$ 0.0
Leases - right of use liabilities, current	1.8	1.8
Leases - right of use liabilities, noncurrent	$ 23.5	$ 23.5	$ 0.0
Operating lease, weighted average remaining lease term	14 years 4 months 24 days	14 years 4 months 24 days
Operating lease, weighted average discount rate, percent	7.30%	7.30%
Operating lease, expense	$ 2.3	$ 4.5
Short-term lease, cost	$ 1.1	2.1
Operating lease, payments		$ 2.0

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- References

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Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
-Subparagraph (b)
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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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-Publisher FASB
-Name Accounting Standards Codification
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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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