Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012		Sep. 30, 2011
Operating revenues	$ 305,299,000	$ 319,274,000		$ 333,279,000
Operating costs:
Operating expenses	234,660,000	258,970,000		292,519,000
General and administrative	13,364,000	11,205,000		13,550,000
Depreciation	37,095,000	32,498,000		30,536,000
Operating costs, Total	285,119,000	302,673,000		336,605,000
Income (loss) from operations	20,180,000	16,601,000		(3,326,000)
Other income (expense):
Interest income	63,000	28,000		35,000
Interest expense	(660,000)	(629,000)		(167,000)
Other (expense) income	(13,000)	516,000		651,000
Income (loss) before income tax	19,570,000	16,516,000		(2,807,000)
Income tax (expense) benefit:
Current	(817,000)	(490,000)		2,929,000
Deferred	(8,273,000)	(4,913,000)		(3,368,000)
Income tax (expense) benefit	(9,090,000)	(5,403,000)		(439,000)
Net income (loss)	10,480,000	11,113,000	[1]	(3,246,000)
Realization of losses on investment, net of tax of $2,000				(4,000)
Comprehensive income (loss)	$ 10,480,000	$ 11,113,000		$ (3,250,000)
Basic income (loss) per share attributable to common stock	$ 1.31	$ 1.40	[1]	$ (0.42)
Diluted income (loss) per share attributable to common stock	$ 1.31	$ 1.39	[1]	$ (0.42)
Weighted average equivalent common shares outstanding	7,879,614	7,841,722	[1]	7,809,561
Weighted average equivalent common shares outstanding - assuming dilution	7,920,365	7,877,107	[1]	7,809,561

[1] The 2012 earnings per share calculations have been adjusted for the two-class method to reflect restricted shares that were not reflected as participating in the prior period. Basic earnings per share as previously reported for year ended September 30, 2012 was $1.42. Diluted earnings per share as previously reported for the year-ended September 30, 2012 was $1.40. Basic weighted average shares outstanding as previously reported for the year ended September 30, 2012 was 7,841,722. Diluted weighted average shares outstanding as previously reported for the year ended September 30, 2012 was 7,931,593. The impact on all prior period financial statements is deemed immaterial.