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Commitments and Contingencies - Schedule of Lease Costs and Other Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Net lease cost	$ 2,036
Right-of-use assets obtained in exchange for new operating lease liabilities	1,707
Operating Leases
Lessee, Lease, Description [Line Items]
Lease cost	2,044
Cash paid for amounts included in the measurement of lease liabilities	$ 1,609
Weighted-average discount rate (percent)	6.00%
Weighted-average remaining lease term (in years):	6 years 3 months 18 days
Ground lease
Lessee, Lease, Description [Line Items]
Lease cost	$ 590
Sublease income, ground leases (included in other operations revenue)	(598)
Cash paid for amounts included in the measurement of lease liabilities	$ 608
Weighted-average discount rate (percent)	10.20%
Weighted-average remaining lease term (in years):	49 years 2 months 12 days

X

- Definition

Amount of lease cost recognized by lessee for lease contract.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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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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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 increase in right-of-use asset obtained in exchange for operating lease liability.

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Amount of sublease income excluding finance and operating lease expense.

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