Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Narrative (Details)

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INCOME TAXES - Narrative (Details)
12 Months Ended
Dec. 31, 2019
USD ($)
examination
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Income Taxes (Textual) [Abstract]      
Statutory federal income tax rate 21.00% 21.00% 35.00%
Effective tax rate 17.60% 19.70% 42.10%
Deferred tax asset $ 25,917,000 $ 26,465,000  
Deferred tax liabilities 4,449,000 4,378,000  
Unrecognized tax benefits 0 0  
Deferred tax assets, valuation allowance 0    
Provisional income tax expense (benefit) from reduction of deferred tax asset related to the Tax Act   (2,700,000) $ 19,700,000
Tax benefit recognized for energy efficient homes credit 19,900,000 $ 8,100,000  
Other Receivables [Member]      
Income Taxes (Textual) [Abstract]      
Income Taxes Receivable 14,400,000    
State [Member]      
Income Taxes (Textual) [Abstract]      
NOL carryforwards $ 800,000    
Number of income tax examinations pending | examination 1    
Federal [Member]      
Income Taxes (Textual) [Abstract]      
Tax credits $ 0