Long-term Debt Non-Interest Bearing Loan (Details) (Non interest bearing note [Member])	12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2014 AUD	Dec. 01, 2010 USD ($)	Dec. 01, 2010 AUD
Debt Instrument [Line Items]
Non-interest bearing loan, carrying value	$ 2,000,000	2,500,000	$ 1,700,000	1,800,000
Non-interest bearing loan	$ 40,900,000		$ 48,200,000	50,000,000
Non-interest bearing loan, maturity date	Jan. 14, 2054	Jan. 14, 2054
Debt instrument, interest rate, effective percentage	8.00%	8.00%