LONG-TERM DEBT	12 Months Ended
Sep. 30, 2017
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT Canadian revolving demand facility In June 2016, Barnwell entered into an agreement with Royal Bank of Canada for a revolving demand facility in the amount of $500,000 Canadian dollars. Borrowings under this facility were $0 at September 30, 2016. The obligations under the credit facility were secured by a $500,000 Canadian dollar guaranteed investment certificate pledged to Royal Bank of Canada, which is classified as "Restricted cash" on the accompanying Consolidated Balance Sheet at U.S. $381,000, at the September 30, 2016 exchange rate. In April 2017, the revolving demand facility was canceled and the guaranteed investment certificate matured and the funds were reclassified to cash. Real estate loan Barnwell, together with its real estate joint venture, Kaupulehu 2007, had a non-revolving real estate loan with a Hawaii bank. In April 2016, the home collateralizing the loan was sold and in accordance with the terms of the loan agreement a portion of the proceeds from the sale was used to repay the $3,440,000 remaining balance of the real estate loan.

LONG-TERM DEBT

Canadian revolving demand facility

In June 2016, Barnwell entered into an agreement with Royal Bank of Canada for a revolving demand facility in the amount of $500,000 Canadian dollars. Borrowings under this facility were $0 at September 30, 2016. The obligations under the credit facility were secured by a $500,000 Canadian dollar guaranteed investment certificate pledged to Royal Bank of Canada, which is classified as "Restricted cash" on the accompanying Consolidated Balance Sheet at U.S. $381,000, at the September 30, 2016 exchange rate. In April 2017, the revolving demand facility was canceled and the guaranteed investment certificate matured and the funds were reclassified to cash.

Real estate loan

Barnwell, together with its real estate joint venture, Kaupulehu 2007, had a non-revolving real estate loan with a Hawaii bank. In April 2016, the home collateralizing the loan was sold and in accordance with the terms of the loan agreement a portion of the proceeds from the sale was used to repay the $3,440,000 remaining balance of the real estate loan.