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Leases (Summary of Lease Costs and Other Lease Information (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
		Sep. 30, 2019	Sep. 30, 2019
Lease costs:
Operating lease costs		$ 706	$ 2,096
Variable lease costs	[1]	112	321
Sublease income		(12)	(35)
Net lease costs		$ 806	2,382
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases			1,990
Right of use assets obtained in exchange for new operating lease liabilities			$ 620
[1] Variable lease costs primarily represent variable payments such as common area maintenance, insurance, taxes and utilities.

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Cash paid for amounts included in measurement of lease liabilities.

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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 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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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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