Notes Payable (New Zealand Corporate Credit Facility) (Narrative) (Details) - Jun. 30, 2015 $ in Thousands, NZD in Millions	NZD item	USD ($)
New Zealand Corporate Credit Facility [Member]
Debt Instrument [Line Items]
Contractual facility	NZD 50.0	$ 33,890
Interest rate	1.75%	1.75%
Maturity Date	Mar. 31, 2018
Number of tranches	2
New Zealand Corporate Credit Facility, Tranch 1 [Member]
Debt Instrument [Line Items]
Contractual facility	NZD 35.0	$ 23,700
New Zealand Corporate Credit Facility, Tranch 2 [Member]
Debt Instrument [Line Items]
Contractual facility	NZD 15.0	$ 10,200