Borrowings (Westpac Bank Corporate Credit Facility (NZ)) (Narrative) (Details) $ in Thousands, $ in Millions		12 Months Ended
	Aug. 13, 2024 NZD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 NZD ($)
Debt Instrument [Line Items]
Contractual facility		$ 210,572	$ 218,159
Westpac Bank Corporate Credit Facility [Member]
Debt Instrument [Line Items]
Increase in contractual facility amount	$ 5.0
Contractual facility	$ 18.8	$ 10,543	$ 8,775	$ 13.8
Maturity date		Mar. 31, 2025	Jan. 01, 2025	Jan. 01, 2025
Interest rate		2.40%
Line of credit charge		1.65%