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SHARE-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Additional Disclosures [Abstract] |  |  |  |
Vested share-based awards withheld to satisfy income tax obligations (in shares) |  |  | 41,817 | 40,092
Vested share-based awards withheld to satisfy income tax obligations |  |  | $ 3,000 | $ 3,900
Compensation Expense [Abstract] |  |  |  |
Share-based compensation expense | $ 2,100 | $ 1,900 | 4,054 | 3,561
401(k) Profit Sharing Plan [Abstract] |  |  |  |
Contribution to profit sharing plan | $ 700 | $ 500 | $ 1,400 | $ 1,000
Restricted Stock [Member] |  |  |  |
Number of Shares [Roll Forward] |  |  |  |
Nonvested at beginning of period (in shares) |  |  | 224,000 |
Granted (in shares) |  |  | 93,264 |
Vested (in shares) |  |  | (123,011) |
Forfeited (in shares) |  |  | (293) |
Nonvested at end of period (in shares) | 193,960 |  | 193,960 |
Weighted Average Grant-date Fair Value [Roll Forward] |  |  |  |
Nonvested at beginning of period (in dollars per share) |  |  | $ 67.70 |
Granted (in dollars per share) |  |  | 72.89 |
Vested (in dollars per share) |  |  | 62.04 |
Forfeited (in dollars per share) |  |  | 87.18 |
Nonvested at end of period (in dollars per share) | $ 70.98 |  | $ 70.98 |
Compensation Expense [Abstract] |  |  |  |
Unrecognized compensation expense | $ 12,000 |  | $ 12,000 |
Unrecognized compensation expense, period for recognition |  |  | 33 months |
2017 Director LTIP [Member] | Restricted Stock [Member] |  |  |  |
Number of Shares [Roll Forward] |  |  |  |
Granted (in shares) |  |  | 8,132 | 8,322
2012 Employee LTIP [Member] | Restricted Stock [Member] |  |  |  |
Number of Shares [Roll Forward] |  |  |  |
Granted (in shares) |  |  | 85,132 | 69,847
Additional Disclosures [Abstract] |  |  |  |
Vested share-based awards withheld to satisfy income tax obligations (in shares) |  |  | 41,817 |
Vested share-based awards withheld to satisfy income tax obligations |  |  | $ 3,000 |

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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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