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Detail Of Certain Balance Sheet Accounts | 12 Months Ended
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Sep. 30, 2015
Detail Of Certain Balance Sheet Accounts [Abstract] |
Detail Of Certain Balance Sheet Accounts | 6. DETAIL OF CERTAIN BALANCE SHEET ACCOUNTS Activity in our allowance for doubtful accounts on accounts and long-term receivables consists of the following:
|  |  | Years Ended September 30,
|  |  | 2015 |  | 2014
Balance at beginning of period |  | $ | 780 |  | $ | 980
Additions to costs and expenses |  |  | 416 |  |  | 170
Deductions for uncollectible receivables written off, net of recoveries |  |  | (354) |  |  | (370)
Balance at end of period |  | $ | 842 |  | $ | 780
Accounts payable and accrued expenses consist of the following:
|  | Years Ended September 30,
|  | 2015 |  | 2014
Accounts payable, trade |  | $ | 47,033 |  | $ | 38,639
Accrued compensation and benefits |  |  | 22,527 |  |  | 22,076
Accrued insurance liabilities |  |  | 4,518 |  |  | 4,560
Other accrued expenses |  |  | 8,832 |  |  | 8,757
|  | $ | 82,910 |  | $ | 74,032
Contracts in progress are as follows:
|  | Years Ended September 30,
|  | 2015 |  | 2014
Costs incurred on contracts in progress |  | $ | 329,942 |  | $ | 281,764
Estimated earnings |  |  | 37,576 |  |  | 32,088
|  |  | 367,518 |  |  | 313,852
Less--Billings to date |  |  | (380,365) |  |  | (327,113)
Net contracts in progress |  | $ | (12,847) |  | $ | (13,261)
Costs and estimated earnings in excess of billings on uncompleted contracts |  |  | 12,318 |  |  | 8,591
Less--Billings in excess of costs and estimated earnings on uncompleted contracts |  |  | (25,165) |  |  | (21,852)
Net contracts in progress |  | $ | (12,847) |  | $ | (13,261)
Other non-current assets are comprised of the following:
|  | Years Ended September 30,
|  | 2015 |  | 2014
Deposits |  | $ | - |  | $ | 250
Deferred tax assets |  |  | 147 |  |  | 298
Executive Savings Plan assets |  |  | 617 |  |  | 625
Securities and equity investments |  |  | 919 |  |  | 919
Other |  |  | 2,332 |  |  | 2,375
Total |  | $ | 4,015 |  | $ | 4,467
Securities and Equity Investments Investment in EnerTec h At September 30, 2015 and 2014, we held an investment in EnerTech Capital Partners II L.P.(“EnerTech), a private investment fund. As our investment was 2.21 % of the overall ownership in EnerT ech at September 30, 2015 and 2014, we account for this investment using the cost method of accounting. EnerTech’s investment portfolio from time to time results in unrealized losses ref lecting a possible, other-than-temporary, i mpairment of our inve stment. The carrying value of our investment in EnerTech at September 30, 2015 and 2014 was $919. The following table presents the reconciliation of the carrying value and unrealized gains (losses) to the fair v alue of the investment in EnerTech as of September 30, 2015 and 2014:
|  | Years Ended September 30,
|  | 2015 |  | 2014
Carrying value |  | $ | 919 |  | $ | 919
Unrealized gains |  |  | 66 |  |  | 94
Fair value |  | $ | 985 |  | $ | 1,013
At each reporting date, the Company performs an evaluation of impairment for securities to determine if any unrealized losses are other-than-temporary. For equity securities, this evaluation considers a number of factors including, but not limited to, the length of time and extent to which the fair value has been less than cost, the financial condition and near term prospects of the issuer and management’s ability and intent to hold the securities until fair value recovers. The assessment of the ability and intent to hold these securities to recovery focuses on liquidity needs, asset and liability management obj ectives and securities portfolio objectives. Based on the results of this evaluation, we believe the unrealized gain at September 30, 2015 indicated our investment was not impaired. In December 2014, EnerTech’s general partner, with the consent of the fund’s investors, extended th e fund through December 31, 2015. The fund is expected to terminate on this date unless extended by the fund’s valuation committee. The fund may be extended for another one-year period through December 31, 2016 with the consent of the fund’s valuation committee.

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