Operating leases (Tables)

12 Months Ended

Dec. 31, 2019

Operating leases [Abstract]

Other Information Related to Leases

Other information related to leases was as follows:

(dollars in thousands)	2019		2018		2017
Operating lease cost	$	7,808		7,988		7,889
Variable lease cost		1,968		2,000		1,889
Total Lease costs	$	9,776	$	9,988	$	9,778

Supplemental Cash Flows Information

Supplemental cash flows information:
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	7,839
Right-of-use assets obtained in exchange for lease obligations:	$	57,464
Weighted average remaining lease term		9.4
Weighted average discount rate		3.3	%

Future Minimum Lease Payments

Future minimum lease payments under non-cancellable leases as of December 31, 2019 were as follows:

(dollars in thousands)

Year ending December 31,
2020	$	8,039
2021		8,033
2022		7,533
2023		7,227
2024		7,100
Thereafter		28,361
Total lease payments	$	66,293
Less: Interest		9,740
Present value of lease liabilities	$	56,553