Operations In Foreign Currency (Details)	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Australian Dollar [Member] | Spot Rate [Member]
Currency Exchange Rates [Line Items]
Currency exchange rates	0.7677	0.7286	0.7625
Australian Dollar [Member] | Average Rate [Member]
Currency Exchange Rates [Line Items]
Currency exchange rates	0.7216	0.7524	0.7862
New Zealand Dollar [Member] | Spot Rate [Member]
Currency Exchange Rates [Line Items]
Currency exchange rates	0.6926	0.6842	0.7485
New Zealand Dollar [Member] | Average Rate [Member]
Currency Exchange Rates [Line Items]
Currency exchange rates	0.6637	0.7004	0.7514