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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Difference Between Federal Statutory Rate and Effective Tax Rate (Detail) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Accounting Policies [Abstract] |  |  |  |
Tax at statutory rate | 21.00% | 21.00% | 21.00% | 21.00%
Tax effect of: |  |  |  |
Valuation allowance on deferred tax assets | 10.90% | (0.80%) | (7.60%) | 5.20%
State income taxes, net of federal benefit | 4.10% | (2.50%) | 1.30% | (30.00%)
Nondeductible stock-based compensation | 0.30% | 0.80% | 0.10% | 2.90%
Change in Louisiana tax law | (8.80%) | 0.00% | 9.00% | 0.00%
Other | 0.00% | 0.20% | 0.00% | 1.60%
Effective tax rate | 27.50% | 18.70% | 23.80% | 0.70%

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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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