Insurance Recoveries On Impairment And Related Losses Due To Earthquake (Allocation Of The Total Insurance Proceeds To The Various Risks and Bases) (Details) - NZD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Insurance Recoveries [Line Items] | ||
Basis for Allocation | $ 55,499 | |
Percentage Allocation | 100.00% | |
Allocation of Insurance Proceeds | $ 36,034 | $ 36,034 |
Property Damage [Member] | ||
Insurance Recoveries [Line Items] | ||
Basis for Allocation | $ 44,808 | |
Percentage Allocation | 81.00% | |
Allocation of Insurance Proceeds | $ 29,093 | |
Demolition Costs [Member] | ||
Insurance Recoveries [Line Items] | ||
Basis for Allocation | $ 7,276 | |
Percentage Allocation | 13.00% | |
Allocation of Insurance Proceeds | $ 4,724 | |
Business Interruption [Member] | ||
Insurance Recoveries [Line Items] | ||
Basis for Allocation | $ 3,415 | |
Percentage Allocation | 6.00% | |
Allocation of Insurance Proceeds | $ 2,217 |