Leases (Lease-Related Assets and Liabilities) (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Assets:
Operating lease assets	$ 20,293
Finance lease assets	1,519
Total lease assets	21,812
Current liabilities:
Operating lease liabilities	4,804
Finance lease liabilities	1,598
Noncurrent liabilities:
Operating lease liabilities	16,305
Finance lease liabilities	2,339
Total lease liabilities	$ 25,046