Commitments and Contingencies	12 Months Ended
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure	Commitments and Contingencies Insurance The Company carries insurance policies to cover various risks, primarily general liability, automobile liability, workers compensation and employee medical expenses under which we are liable to reimburse the insurance company for a portion of each claim paid. Property and Casualty Payment for general liability and workers compensation claim amounts generally range from the first $1,600 to $250,000 per occurrence for Workers Compensation, and $100,000 per occurrence for General Liability. We accrue for probable losses, both reported and unreported, that are reasonably estimable using actuarial methods based on historic trends, modified, if necessary, by recent events. Changes in our loss assumptions caused by changes in actual experience would affect our assessment of the ultimate liability and could have an effect on our operating results and financial position for payments up to $350,000 per occurrence collective for general liability and workers compensation, with a maximum aggregate liability of $4.0 million combined casualty losses per year. Medical The Company maintains a fully insured and self-insured health benefits plan, which provides medical benefits to employees electing coverage under the plans. Under its self-insured plan, the Company has stop-loss coverage to limit the exposure arising from these claims. Self-insured claims filed and claims incurred but not reported are accrued based upon management’s estimates of the ultimate cost of claims incurred using actuarial assumptions followed in the insurance industry and historical experience. Although management believes it has the ability to reasonably estimate losses related to claims, it is possible that actual results could differ from recorded self-insured liabilities. Guarantees The Company obtains bonding on construction contracts through Travelers Casualty and Surety Company of America (“Travelers”). As is customary in the construction industry, the Company indemnifies Travelers for any losses incurred by it in connection with bonds that are issued. The Company has granted Travelers a security interest in accounts receivable and contract rights for that obligation. The Company typically indemnifies contract owners for claims arising during the construction process and carries insurance coverage for such claims, which in the past have not been material. The Company’s Certificate of Incorporation provides for indemnification of its officers and directors. The Company has a directors and officers insurance policy that limits their exposure to litigation against them in their capacities as such. Litigation The Company is the subject of certain other claims and lawsuits occurring in the normal course of business. Management, after consultation with legal counsel, does not believe that the outcome of these other actions will have a material impact on the financial statements of the Company. There are no significant unresolved legal issues as of December 31, 2017 and 2016. Purchase Commitments To manage the risk of changes in material prices and subcontracting costs used in tendering bids for construction contracts, most of the time, we obtain firm quotations from suppliers and subcontractors before submitting a bid. These quotations do not include any quantity guarantees. As soon as we are advised that our bid is the lowest, we enter into firm contracts with most of our materials suppliers and sub-contractors, thereby mitigating the risk of future price variations affecting the contract costs.

Commitments and Contingencies

Insurance

The Company carries insurance policies to cover various risks, primarily general liability, automobile liability, workers compensation and employee medical expenses under which we are liable to reimburse the insurance company for a portion of each claim paid.

Property and Casualty

Payment for general liability and workers compensation claim amounts generally range from the first $1,600 to $250,000 per occurrence for Workers Compensation, and $100,000 per occurrence for General Liability. We accrue for probable losses, both reported and unreported, that are reasonably estimable using actuarial methods based on historic trends, modified, if necessary, by recent events. Changes in our loss assumptions caused by changes in actual experience would affect our assessment of the ultimate liability and could have an effect on our operating results and financial position for payments up to $350,000 per occurrence collective for general liability and workers compensation, with a maximum aggregate liability of $4.0 million combined casualty losses per year.

Medical

The Company maintains a fully insured and self-insured health benefits plan, which provides medical benefits to employees electing coverage under the plans. Under its self-insured plan, the Company has stop-loss coverage to limit the exposure arising from these claims. Self-insured claims filed and claims incurred but not reported are accrued based upon management’s estimates of the ultimate cost of claims incurred using actuarial assumptions followed in the insurance industry and historical experience. Although management believes it has the ability to reasonably estimate losses related to claims, it is possible that actual results could differ from recorded self-insured liabilities.

Guarantees

The Company obtains bonding on construction contracts through Travelers Casualty and Surety Company of America (“Travelers”). As is customary in the construction industry, the Company indemnifies Travelers for any losses incurred by it in connection with bonds that are issued. The Company has granted Travelers a security interest in accounts receivable and contract rights for that obligation.

The Company typically indemnifies contract owners for claims arising during the construction process and carries insurance coverage for such claims, which in the past have not been material.

The Company’s Certificate of Incorporation provides for indemnification of its officers and directors. The Company has a directors and officers insurance policy that limits their exposure to litigation against them in their capacities as such.

Litigation

The Company is the subject of certain other claims and lawsuits occurring in the normal course of business. Management, after consultation with legal counsel, does not believe that the outcome of these other actions will have a material impact on the financial statements of the Company. There are no significant unresolved legal issues as of December 31, 2017 and 2016.

Purchase Commitments

To manage the risk of changes in material prices and subcontracting costs used in tendering bids for construction contracts, most of the time, we obtain firm quotations from suppliers and subcontractors before submitting a bid. These quotations do not include any quantity guarantees. As soon as we are advised that our bid is the lowest, we enter into firm contracts with most of our materials suppliers and sub-contractors, thereby mitigating the risk of future price variations affecting the contract costs.