Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Leases
Operating lease cost	$ 368	$ 367	$ 735	$ 602
Operating lease payments	342	349	601	567
Operating lease right-of-use assets	6,607	6,291	6,607	6,291	$ 7,145
Operating lease liabilities	$ 6,899	$ 6,354	$ 6,899	$ 6,354
Weighted average remaining lease term	10 years 10 months 24 days	12 years 6 months	10 years 10 months 24 days	12 years 6 months
Weighted average discount rate	3.70%	3.40%	3.70%	3.40%
2024 (rest of year)	$ 590		$ 590
2025	1,120		1,120
2026	783		783
2027	709		709
2028	316		316
Thereafter	3,381		$ 3,381
Lessor, Operating Lease, Existence of Option to Extend [true false]			true
Property, plant and equipment, gross	676,290	$ 652,777	$ 676,290	$ 652,777	$ 670,498
Lease income	$ 1,835	1,222	$ 3,422	2,443
Maximum
Leases
Remaining lease term	17 years		17 years
Commercial real estate leased to third parties
Leases
Property, plant and equipment, gross	$ 51,370	$ 51,370	$ 51,370	51,370
Depreciation			$ 18,492	$ 17,432
Commercial real estate leased to third parties | Maximum
Leases
Lessor, renewal term	56 years		56 years
Industrial building in Canada leased to new tenant
Leases
Amended lease term	15 years		15 years
Industrial building in Canada leased to new tenant | Maximum
Leases
Lessor, renewal term	10 years		10 years