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Leases (Tables)
 6 Months Ended
Jun. 30, 2021
Leases [Abstract]  
Summary of Net Lease Cost and Other Information
The table below summarizes the Company’s net lease cost:
Three Months Ended June 30,For the Six Months Ended June 30,
2021202020212020
(Dollars in thousands)
Operating lease cost$3,891 $3,879 $7,720 $7,824 
Short term lease cost— — — — 
Variable lease cost747 772 1,501 3,397 
Sublease income(99)(214)(252)(426)
Net lease cost$4,539 $4,437 $8,969 $10,795 
The table below summarizes other information related to the Company’s operating leases:
At or for the Six Months Ended
June 30, 2021		At or for the Six Months Ended
June 30, 2020
(Dollars in thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows for operating leases$7,428 $7,392 
Right-of-use assets obtained in exchange for lease liabilities, net— 1,541 
Weighted-average remaining lease term - operating leases5.2 years5.5 years
Weighted-average discount rate - operating leases2.69 %3.01 %
Summary of Maturity of Remaining Lease Liabilities
The table below summarizes the maturity of remaining lease liabilities:
June 30, 2021
(Dollars in thousands)
2021$7,277 
202211,312 
20239,613 
20248,684 
20257,319 
2026 and thereafter11,971 
Total lease payments56,176 
Less: imputed interest3,999 
Total lease obligations$52,177