INCOME TAXES, Reconciliation of Income taxes Computed at the Statutory Federal Income Tax Rate to Provision for Income Taxes (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
Mar. 31, 2019 |
|
| INCOME TAXES [Abstract] | |||
| Additions or reductions to gross unrecognized tax benefits | $ 0 | ||
| Reconciliation of income taxes to the statutory rate [Abstract] | |||
| Statutory federal income tax rate | 21.00% | 21.00% | 21.00% |
| Income tax expense computed at the U.S. statutory federal rate | $ 22,450 | $ 20,182 | $ 18,139 |
| Effect of federal reduction of statutory rate | 0 | 0 | 0 |
| State income tax expense - net of federal benefit | 6,941 | 5,659 | 4,795 |
| Non-deductible executive compensation | 2,052 | 613 | 630 |
| Other | 1,066 | 423 | (526) |
| Provision for income taxes | $ 32,509 | $ 26,877 | $ 23,038 |
| Effective income tax rate | 30.40% | 28.00% | 26.70% |