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INCOME TAXES - Narrative (Details) | 12 Months Ended
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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 |  |

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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