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Leases - Lease Costs and Other Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Lease Costs
Operating lease costs	$ 146
Short term lease costs	36
Variable lease costs	23
Total	205
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 139

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

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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