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Contracts in Progress (Tables)
12 Months Ended
Dec. 31, 2020
Contractors [Abstract]  
Schedule of contracts in progress

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December 31,

    

December 31, 

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2020

​

2019

Costs incurred on uncompleted contracts

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$

1,151,987

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$

884,244

Estimated earnings

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202,369

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144,160

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1,354,356

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1,028,404

Less: Billings to date

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(1,355,220)

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(1,035,796)

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$

(864)

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$

(7,392)

Included in the accompanying Consolidated Balance Sheets under the following captions:

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Costs and estimated earnings in excess of billings on uncompleted contracts

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$

32,271

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$

41,389

Billings in excess of costs and estimated earnings on uncompleted contracts

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(33,135)

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(48,781)

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$

(864)

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$

(7,392)