Leases (Narrative) (Details) ft² in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) ft²	Dec. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Impairment loss		$ 5,200
Aggregate impairment loss	$ 42,300	42,300
Operating lease, impairment loss		2,700
Finance lease, impairment loss		2,500
Finance lease, liability, current		1,482	$ 1,770
Long-term finance lease liabilities		$ 10,543	$ 11,458
Unrecorded unconditional purchase obligation, net rentable area | ft²		57
Lease not yet commenced, lease terms		5 years
Unrecorded unconditional purchase obligation, including lease not yet commenced, total		$ 3,400
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term		13 years