Income Taxes (Tables)

12 Months Ended

Sep. 30, 2015

Income Tax Disclosure [Abstract]

Provision for income taxes

		2015	2014		2013
Current:
Federal	$	1,803	2,820		1,842
State		524	1,083		392
		2,327	3,903		2,234
Deferred		1,568	(342	)	3,274
Total	$	3,895	3,561		5,508

		2015		2014	2013
Amount computed at statutory
Federal rate	$	3,396		3,020	4,863
State income taxes (net of Federal
income tax benefit)		504		520	622
Other, net		(5	)	21	23
Provision for income taxes	$	3,895		3,561	5,508

Temporary differences

		2015	2014
Deferred tax liabilities:
Property and equipment	$	13,100	12,120
Depletion		496	477
Unrealized rents		1,881	1,850
Prepaid expenses		278	314
Gross deferred tax liabilities		15,755	14,761
Deferred tax assets:
Employee benefits and other		1,214	1,792
Gross deferred tax assets		1,214	1,792
Net deferred tax liability	$	14,541	12,969

Unrecognized tax benefits

		2015	2014
Balance at October 1	$	—	—
Reductions due to lapse of statute of limitations		—	—
Balance at September 30	$	—	—