Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Components Of Lease Expense	December 31,(Dollars in thousands) 2021 2020Lease cost Finance lease cost: Amortization of right-of-use assets $ 49 $ 93Interest on lease liabilities 5 8Operating lease cost 33,782 33,462Variable lease cost (7,068) (4,445)Total lease cost $ 26,768 $ 29,118
Supplemental Cash Flow Information Related To Leases	December 31,(Dollars in thousands) 2021 2020Cash flows relating to lease cost Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for finance leases $ 53 $ 105Operating cash flows for operating leases 26,057 14,060Right-of-use assets obtained in exchange for new operating lease liabilities $ 39,090 $ (2,054)
Supplemental Balance Sheet Information Related To Leases	December 31,(Dollars in thousands) 2021 2020Operating leases Operating lease right-of-use assets $ 227,367 $ 220,503Operating lease liabilities - current portion 23,737 22,699Operating lease liabilities - non-current portion 223,364 212,806Total operating lease liabilities $ 247,101 $ 235,505Finance leases —Property plant and equipment, gross $ 374 $ 383Accumulated depreciation (311) (271)Property plant and equipment, net $ 63 $ 112Other current liabilities 40 49Other long-term liabilities 28 69Total finance lease liabilities $ 68 $ 118 Other information Weighted-average remaining lease term - finance leases 2 3Weighted-average remaining lease term - operating leases 11 11Weighted-average discount rate - finance leases 5.24% 5.27%Weighted-average discount rate - operating leases 4.47% 4.71%
Maturity Of Leases As Lessee	(Dollars in thousands) Operating ‎leases Finance ‎leases2022 $ 34,324 $ 432023 34,281 282024 32,838 —2025 30,855 —2026 28,608 —Thereafter 158,713 —Total lease payments $ 319,619 $ 71Less imputed interest (72,518) (3)Total $ 247,101 $ 68
Components Of Lease Income	December 31,(Dollars in thousands) 2021 2020Components of lease income Lease payments $ 9,679 $ 9,432Variable lease payments 655 (131)Total lease income $ 10,334 $ 9,301
Book Value Of Assets Under Operating Leases From Owned Assets	December 31, December 31,(Dollars in thousands) 2021 2020Building and improvements Gross balance $ 140,028 $ 153,643Accumulated depreciation (23,923) (26,107)Net Book Value $ 116,105 $ 127,536
Maturity Of Leases As Lessor	(Dollars in thousands) Operating ‎leases2022 $ 7,2252023 6,7612024 6,0072025 4,9912026 2,383Thereafter 2,642Total $ 30,009