Leases (Schedule of Operating Lease Payments) (Details) - USD ($) $ in Thousands		Jun. 30, 2019		Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Operating lease minimum payments, Due Current Year		$ 1,856
Operating lease minimum payments, Due Year Two		3,515
Operating lease minimum payments, Due Year Three		3,312
Operating lease minimum payments, Due Year Four		3,165
Operating lease minimum payments, Due Year Five		3,090
Operating lease minimum payments, Due after Year Five		24,716
Total operating lease payments	[1]	39,654
Interest		9,444
Present value of operating lease liabilities		$ 30,210	[2]	$ 30,900	$ 0

[1] Includes $4.2 million related to options to extend lease terms that are reasonably certain of being exercised.

[2] Includes short-term operating lease liabilities of $2.5 million.