Leases (Narrative) (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019
Number of operating leases not yet commenced		0		0		1
Operating lease rent expense	[1]	$ 1,019	$ 944	$ 2,956	$ 2,823
Options to extend reasonably certain of being exercised	[2],[3]			2,600
Short-term operating lease liabilities		$ 2,900		$ 2,900

[1] Included in net occupancy expenses in the Unaudited Consolidated Income Statement.

[2] Includes $2.6 million related to options to extend lease terms that are reasonably certain of being exercised.

[3] Includes short-term operating lease liabilities of $2.9 million.