Operations In Foreign Currency (Summary Of Currency Exchange Rates) (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Spot Rate [Member]
Currency Exchange Rates [Line Items]
Foreign currency exchange rate	0.5642	0.6899
Australian Dollar [Member] | Spot Rate [Member]
Currency Exchange Rates [Line Items]
Foreign currency exchange rate	0.6437	0.7228	0.6437	0.7228	0.7260
Australian Dollar [Member] | Average Rate [Member]
Currency Exchange Rates [Line Items]
Foreign currency exchange rate	0.6829	0.7344	0.7071	0.7592	0.7517
New Zealand Dollar [Member] | Spot Rate [Member]
Currency Exchange Rates [Line Items]
Foreign currency exchange rate			0.5642	0.6899	0.6839
New Zealand Dollar [Member] | Average Rate [Member]
Currency Exchange Rates [Line Items]
Foreign currency exchange rate	0.6127	0.7004	0.6463	0.7117	0.7077