CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Sep. 30, 2015
Current assets:
Cash and cash equivalents	$ 17,433	$ 8,471
Restricted cash	384	7,458
Accounts and other receivables, net of allowance for doubtful accounts of: $41,000 at June 30, 2016; $23,000 at September 30, 2015	1,851	2,300
Income taxes receivable	190	82
Investment held for sale	1,192	1,192
Real estate held for sale	0	5,132
Other current assets	1,007	1,043
Total current assets	22,057	25,678
Restricted cash, net of current portion	0	119
Investments	3,544	6,288
Property and equipment	78,541	75,953
Accumulated depletion, depreciation, and amortization	(70,554)	(66,485)
Property and equipment, net	7,987	9,468
Total assets	33,588	41,553
Current liabilities:
Accounts payable	1,609	2,653
Accrued capital expenditures	278	363
Accrued operating and other expenses	1,226	1,343
Accrued incentive and other compensation	344	560
Billings in excess of costs	146	569
Payable to joint interest owners	94	428
Current portion of asset retirement obligation	1,130	506
Current portion of long-term debt	0	3,440
Other current liabilities	123	141
Total current liabilities	4,950	10,003
Liability for retirement benefits	4,568	5,409
Asset retirement obligation	6,271	6,430
Deferred income taxes	643	449
Total liabilities	16,432	22,291
Commitments and contingencies (Note 14)
Equity:
Common stock, par value $0.50 per share; authorized, 20,000,000 shares: 8,445,060 issued at June 30, 2016 and September 30, 2015	4,223	4,223
Additional paid-in capital	1,343	1,335
Retained earnings	15,225	17,467
Accumulated other comprehensive loss, net	(1,882)	(2,122)
Treasury stock, at cost: 167,900 shares at June 30, 2016 and September 30, 2015	(2,286)	(2,286)
Total stockholders' equity	16,623	18,617
Non-controlling interests	533	645
Total equity	17,156	19,262
Total liabilities and equity	$ 33,588	$ 41,553