CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Current assets:
Cash and cash equivalents	$ 8,695	$ 16,104
Restricted cash	131	0
Accounts and other receivables, net of allowance for doubtful accounts of: $41,000 at June 30, 2015; $34,000 at September 30, 2014	2,725	2,910
Note receivable	906	0
Prepaid expenses	246	221
Investment held for sale	0	1,139
Real estate held for sale	5,448	5,448
Other current assets	1,167	698
Total current assets	19,318	26,520
Restricted cash, net of current portion	144	0
Investments	7,344	5,900
Property and equipment	203,842	223,023
Accumulated depletion, depreciation, and amortization	(183,429)	(200,673)
Property and equipment, net	20,413	22,350
Total assets	47,219	54,770
Current liabilities:
Accounts payable	1,897	3,453
Accrued operating and other expenses	2,046	2,464
Accrued incentive and other compensation	638	1,085
Current portion of long-term debt	3,654	4,449
Other current liabilities	2,225	3,072
Total current liabilities	10,460	14,523
Long-term debt	4,800	6,650
Liability for retirement benefits	4,238	4,266
Asset retirement obligation	8,222	8,185
Deferred income taxes	1,939	1,201
Total liabilities	$ 29,659	$ 34,825
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, 2015 and September 30, 2014	$ 4,223	$ 4,223
Additional paid-in capital	1,330	1,315
Retained earnings	14,691	16,204
Accumulated other comprehensive loss, net	(1,226)	(258)
Treasury stock, at cost: 167,900 shares at June 30, 2015 and September 30, 2014	(2,286)	(2,286)
Total stockholders' equity	16,732	19,198
Non-controlling interests	828	747
Total equity	17,560	19,945
Total liabilities and equity	$ 47,219	$ 54,770