Long-term Debt (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Long-term Debt	$ 14,137,080	$ 12,479,864	$ 9,627,811
Current portion of long-term debt	1,571,553	1,300,063	971,417
Long-term debt, less current installments	12,565,527	11,179,801	8,656,394
Unsecured Senior Note - 7.9%
Interest Rate terms	7.9%, due serially with annual payments of $355,000 beginning on September 1, 2006 through 2016 and $795,000 due in 2017.	7.9%, due serially with annual payments of $355,000 beginning on September 1, 2006 through 2016 and $795,000 due in 2017.	7.9%, due serially with annual payments of $355,000 beginning on September 1, 2006 through 2016 and $795,000 due in 2017.
Long-term Debt	2,215,000	2,570,000	2,925,000
Notes payable - 6.5%
Interest Rate terms	6.5% with monthly installments through 2013	6.5% with monthly installments through 2013	6.5% with monthly installments through 2013
Long-term Debt	4,584,321	5,050,408	5,487,679
Notes payable - variable rate with 4.5% floor
Interest Rate terms	variable rate with 4.5% floor with monthly installments through May 2015	variable rate with 4.5% floor with monthly installments through May 2015	variable rate with 4.5% floor with monthly installments through May 2015
Long-term Debt	826,573	928,249	1,018,363
M&T Bank - new truck loan
Long-term Debt		2,995	9,786
M&T Bank - excavator & radio equipment
Long-term Debt		6,066	17,285
M&T Bank - backhoe & skidsteer loader
Long-term Debt		21,835	46,493
Community Bank - used trucks (5) loan
Long-term Debt			19,980
M&T Bank - used truck loan
Long-term Debt	4,660	6,854	8,902
MTBank5Member
Long-term Debt	1,670	8,124	14,196
M&T Bank - vehicles loan
Long-term Debt	26,702	54,220	80,127
Notes payable - 5.76%
Interest Rate terms	5.76% with monthly installments through November 2015	5.76% with monthly installments through November 2015	5.76% with monthly installments through November 2015
Long-term Debt	1,599,241	1,747,565
MTBank7Member
Long-term Debt	4,944	9,252
Notes payable - variable rate with 4.25% floor
Interest Rate terms	variable rate with 4.25% floor, monthly installments through November 2016	variable rate with 4.25% floor, monthly installments through November 2016	variable rate with 4.25% floor, monthly installments through November 2016
Long-term Debt	1,847,090	2,000,000
M&T Bank - new trucks loan
Long-term Debt	50,455	74,296
MTBank9Member
Long-term Debt	29,018
Notes payable - variable rate with 3.75% floor
Interest Rate terms	variable rate with 3.75% floor, monthly installments through November 2017	variable rate with 3.75% floor, monthly installments through November 2017	variable rate with 3.75% floor, monthly installments through November 2017
Long-term Debt	2,450,000
Notes payable - 4.46%
Interest Rate terms	4.46% with monthly installments through July 2017, then refinanced at new rate	4.46% with monthly installments through July 2017, then refinanced at new rate	4.46% with monthly installments through July 2017, then refinanced at new rate
Long-term Debt	248,703
NotesPayable6Member
Interest Rate terms	4.46% with monthly installments through July 2017, then refinanced at new rate	4.46% with monthly installments through July 2017, then refinanced at new rate	4.46% with monthly installments through July 2017, then refinanced at new rate
Long-term Debt	$ 248,703