Summary of Significant Accounting Policies and Other Items - Recent Accounting Pronouncements (Details) - USD ($) $ in Millions	Jan. 01, 2019	Jan. 01, 2018
ASU 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment to retained earnings		$ 0.0
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Use of lease practical expedient package	true
Operating lease right of use assets	$ 26.0
Operating lease liabilities	$ 26.0

Amount of the cumulative effect on retained earnings net of related income tax effect.

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Indicates (true false) whether practical expedients are elected for not reassessing whether any expired or existing contract is or contains lease, lease classification for expired or existing lease, and initial direct cost for any existing lease.

+ References

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-Publisher FASB
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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.

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Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

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

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