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Leases - Summary of Total Lease Costs (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Lease cost
Operating lease cost	$ 2,903
Short-term lease cost	1,885
Sublease income	(52)
Total lease cost	4,736
Gain on sale and leaseback transactions, net	207
Operating cash flows from operating leases	2,966
Operating leases	$ 3,004
Operating leases	4 years 8 months 12 days
Operating leases	5.40%

X

- Definition

Amount of lease cost recognized by lessee for lease contract.

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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 gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale.

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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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Amount of sublease income excluding finance and operating lease expense.

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