Notes Payable (Narrative) (Details) - Jun. 30, 2015	Total
NAB Australian Corporate Credit Facility [Member]
Debt Instrument [Line Items]
Fixed interest rate	7.85%
Swap contract rate	5.50%
Interest rate margin	2.35%
US Bank Of America Revolver [Member]
Debt Instrument [Line Items]
Fixed interest rate	3.65%
Swap contract rate	1.15%
Interest rate margin	2.50%
Trust Preferred Securities [Member]
Debt Instrument [Line Items]
Fixed interest rate	5.20%
Swap contract rate	1.20%
Interest rate margin	4.00%