Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases

Summary of net lease expense

	Year Ended December 31,
(dollars in thousands)	2021		2020		2019
Operating lease expense	$	9,432	$	9,169	$	9,158
Short-term lease expense		246		397		487
Variable lease expense		2,204		2,353		2,152
Finance lease expense:
Amortization of right-of-use assets		3		3		3
Interest on lease liabilities		—		1		2
Total finance lease expense		3		4		5
Less: Sublease income		(744)		(1,222)		(1,073)
Net lease expense	$	11,141	$	10,701	$	10,729

Summary of other information related to the Company's lease liabilities

	Year Ended December 31,
(dollars in thousands)	2021			2020			2019
Supplemental Cash Flows Information
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows paid for operating leases	$	7,981		$	8,848		$	8,802
Operating cash flows paid for finance leases	$	—		$	—		$	10
Financing cash flows paid for finance leases	$	10		$	10		$	10
Right-of-use assets obtained in exchange for new lease obligations:
Operating leases	$	31,792		$	3,796		$	1,401
Weighted Average Remaining Lease Term
Operating leases (years)		22.8			16.1			15.7
Finance leases (years)		0.5			1.5			2.5
Weighted Average Discount Rate
Operating leases		3.01	%		3.17	%		3.36	%
Finance leases		6.78	%		6.78	%		6.78	%

Summary of future minimum rental payments under noncancellable leases

	Net Operating
	Lease
(dollars in thousands)	Payments
Year ending December 31:
2022	$	7,755
2023		5,104
2024		4,883
2025		4,250
2026		3,849
Thereafter		68,996
Total future minimum lease payments		94,837
Less: Imputed interest		(29,033)
Total	$	65,804

Summary of future minimum rental income under noncancellable operating leases

The following table sets forth future minimum rental income under noncancelable operating leases with terms in excess of one year as of December 31, 2021:

	Minimum
	Rental
(dollars in thousands)	Income
Year ending December 31:
2022	$	5,535
2023		4,572
2024		3,746
2025		3,126
2026		2,368
Thereafter		2,758
Total	$	22,105