Minimum Lease Commitments (Approximate Minimum Annual Gross Rental Payments And Gross Rental Income) (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Payments
2019 - Payments	$ 15,106
2020 - Payments	16,406
2021 - Payments	15,116
2022 - Payments	14,253
2023 - Payments	13,201
2024 and thereafter - Payments	131,615
Total minimum future amounts	205,697
Receipts
2019 - Receipts	7,533
2020 - Receipts	5,576
2021 - Receipts	5,081
2022 - Receipts	3,636
2023 - Receipts	2,117
2024 and thereafter - Receipts	5,233
Total minimum future amounts	$ 29,176