Leases (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) Day	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets (Note 10)	$ 1,604	$ 1,977
Total operating lease liability	$ 2,842	6,100
Number of leases abandoned | Day	14
Gain on settlement of leases	$ 242	3,483	$ 0
Restricted cash in prepaid expenses and other current assets	416	1,686	0
Lease expense for operating leases	15,200	13,000	$ 13,500
Israel
Lessee, Lease, Description [Line Items]
Restricted cash in prepaid expenses and other current assets	200	$ 1,500
Australia
Lessee, Lease, Description [Line Items]
Restricted cash in prepaid expenses and other current assets	$ 200
Minimum
Lessee, Lease, Description [Line Items]
Operating leases remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating leases remaining lease term	4 years