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Property And Equiment (Narrative) (Details) AUD in Millions |  |  |  | 3 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 11, 2016 USD ($) ft² item | Apr. 01, 2015 NZD property | May 23, 2014 AUD | May 23, 2014 USD ($) | Mar. 31, 2017 USD ($) | Mar. 31, 2016 USD ($) | Mar. 31, 2017 AUD | Mar. 31, 2017 USD ($) | Dec. 31, 2016 AUD | Dec. 31, 2016 USD ($) | Apr. 30, 2015 NZD | Apr. 30, 2015 USD ($) | Apr. 01, 2015 USD ($) | May 12, 2014 AUD a | May 12, 2014 USD ($) a
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation expense for property and equipment |  |  |  |  |  | $ 3,500,000 | $ 3,500,000 |  |  |  |  |  |  |  |  |  |
Carrying value of property |  |  |  |  |  |  |  |  | $ 216,358,000 |  | $ 211,886,000 | [1] |  |  |  |  |
Gain (loss) on sale of assets | [1] |  |  |  |  |  | $ 393,000 |  |  |  |  |  |  |  |  |  |
5995 Sepulveda Blvd, Culver City [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  | $ 11,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area of property | ft² |  | 24,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of parking spaces | item |  | 72 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of leasable area |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Burwood [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | AUD 65.0 | $ 50,600,000
Remaining purchase price |  |  |  |  |  |  |  | AUD 58.5 | 44,700,000 |  |  |  |  |  |  |  |
Carrying value of property |  |  |  |  |  |  |  | AUD 52.1 | $ 39,800,000 | AUD 52.1 | $ 37,700,000 |  |  |  |  |  |
Area of property | a |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.6 | 50.6
Proceeds from the sale property |  |  |  | AUD 6.5 | $ 5,900,000 |  |  |  |  |  |  |  |  |  |  |  |
Sale agreements, prepayment as a percentage of net sale price |  |  |  |  |  |  |  | 90.00% | 90.00% |  |  |  |  |  |  |  |
Lake Taupo [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of land parcels sold | property |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  | NZD 3,400,000 |  |  |  |  |  |  |  |  |  |  |  | $ 2,400,000 |  |
Lake Taupo Parcel One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  |  |  |  |  |  |  |  |  |  |  | NZD 2,200,000 | $ 1,600,000 |  |  |
Carrying value of property |  |  |  |  |  |  |  |  |  |  |  |  | 1,800,000 | 1,300,000 |  |  |
Lake Taupo Parcel Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000 | 831,000 |  |  |
Carrying value of property |  |  |  |  |  |  |  |  |  |  |  |  | NZD 615,000 | $ 426,000 |  |  |
[1] | Certain 2016 balances have been reclassified to conform to the 2017 presentation (see Note 2 - Summary of Significant Accounting Policies - Reclassifications).

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