Subsequent Events	6 Months Ended
Mar. 31, 2016
Subsequent Events [Abstract]
Subsequent Events [Text Block]	14. SUBSEQUENT EVENTS Acquisition of STR Mechanical On April 27, 2016, a wholly-owned subsidiary of our Commercial & Industrial segment acquired an 80% interest in STR Mechanical, LLC (“STR”), a Charlotte, North Carolina-based provider of commercial and industrial mechanical services, including maintenance, repair, and replacement services, and temperature control system installations. Credit facility amendment On May 3, 2016, we entered into a Second Amendment (the “Amendment”) to the Amended and Restated Credit and Security Agreement (as amended, the “Amended Credit Agreement”). Pursuant to the Amendment, the Company’s maximum revolver amount increased from $60 million to $70 million, and the maturity date of the revolving credit facility was extended from August 9, 2018 to August 9, 2019. The Amendment also reduced the interest rate charged under the facility. Prior to the Amendment, the interest rate on the facility was equal to a Daily Three Month LIBOR (as defined in the Amended Credit Agreement), plus an interest rate margin of between 2.00 and 3.00 percent. The Amendment reduced this interest rate margin to a range from 1.75 to 2.25 percent, with a 3.25 percent interest rate margin on overadvance amounts outstanding under the facility. The Amendment also modified the calculation of amounts available under the credit facility, by increasing our advance rates and expanding the definition of assets to be included in our borrowing base. We expect this to result in a significant increase in available borrowing capacity under the credit facility. The Company must maintain a minimum liquidity of $8.75 million, at least one half of which must be Excess Availability (as defined in the Amended Credit Agreement). The Amended Credit Agreement continues to contain customary affirmative, negative and financial covenants, including the requirement that the Company maintain a Fixed Charge Coverage Ratio (as defined in the Amended Credit Agreement) of not less than 1.0:1.0 at any time that Liquidity (defined as the aggregate amount of unrestricted cash and cash equivalents on hand plus Excess Availability) falls below $14 million, with at least $7 million of Excess Availability.

14. SUBSEQUENT EVENTS

Acquisition of STR Mechanical

On April 27, 2016, a wholly-owned subsidiary of our Commercial & Industrial segment acquired an 80% interest in STR Mechanical, LLC (“STR”), a Charlotte, North Carolina-based provider of commercial and industrial mechanical services, including maintenance, repair, and replacement services, and temperature control system installations.

Credit facility amendment

On May 3, 2016, we entered into a Second Amendment (the “Amendment”) to the Amended and Restated Credit and Security Agreement (as amended, the “Amended Credit Agreement”). Pursuant to the Amendment, the Company’s maximum revolver amount increased from $60 million to $70 million, and the maturity date of the revolving credit facility was extended from August 9, 2018 to August 9, 2019. The Amendment also reduced the interest rate charged under the facility. Prior to the Amendment, the interest rate on the facility was equal to a Daily Three Month LIBOR (as defined in the Amended Credit Agreement), plus an interest rate margin of between 2.00 and 3.00 percent. The Amendment reduced this interest rate margin to a range from 1.75 to 2.25 percent, with a 3.25 percent interest rate margin on overadvance amounts outstanding under the facility. The Amendment also modified the calculation of amounts available under the credit facility, by increasing our advance rates and expanding the definition of assets to be included in our borrowing base. We expect this to result in a significant increase in available borrowing capacity under the credit facility.

The Company must maintain a minimum liquidity of $8.75 million, at least one half of which must be Excess Availability (as defined in the Amended Credit Agreement). The Amended Credit Agreement continues to contain customary affirmative, negative and financial covenants, including the requirement that the Company maintain a Fixed Charge Coverage Ratio (as defined in the Amended Credit Agreement) of not less than 1.0:1.0 at any time that Liquidity (defined as the aggregate amount of unrestricted cash and cash equivalents on hand plus Excess Availability) falls below $14 million, with at least $7 million of Excess Availability.