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SHAREHOLDERS' EQUITY - Narrative (Details) |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
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Jul. 29, 2020 $ / shares | Jan. 30, 2020 shares | Jun. 30, 2020 USD ($) $ / shares shares | Mar. 31, 2020 USD ($) senior_executive $ / shares shares | Dec. 31, 2019 USD ($) $ / shares shares | Sep. 30, 2019 $ / shares | Jun. 30, 2019 $ / shares | Mar. 31, 2019 $ / shares | Dec. 31, 2018 $ / shares | Jun. 30, 2020 USD ($) $ / shares shares | Jun. 30, 2019 $ / shares | Sep. 30, 2019 $ / shares | Aug. 01, 2018 USD ($) | Jan. 31, 2018 shares | Aug. 03, 2016 USD ($)
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, dividends, per share, cash paid (in dollars per share) | $ / shares |  |  | $ 0.0750 |  |  |  | $ 0.0725 |  |  | $ 0.2250 | $ 0.2175 |  |  |  |
Share-based compensation arrangement by share-based payment award, expiration period |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |
Maximum percentage of exercise price at grant date fair value |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
Number of shares available for grant (in shares) |  |  | 1,063,148 |  |  |  |  |  |  | 1,063,148 |  |  |  |  |
Stock repurchase program, authorized amount | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 50,000,000 |  | $ 50,000,000
Stock repurchase program, remaining authorized repurchase amount | $ |  |  | $ 57,955,000 |  |  |  |  |  |  | $ 57,955,000 |  |  |  |  |
2006 Equity Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation arrangement by share based payment award equity instruments other than options additional grants in future (in shares) |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |
Restricted Stock and Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period (in shares) |  |  |  |  | 216,523 |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, granted in period, fair value | $ |  |  |  |  | $ 4,705,000 |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares |  |  |  |  | $ 21.73 |  |  |  |  |  |  |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period (in shares) |  |  | 7,599 | 804,674 |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, granted in period, fair value | $ |  |  | $ 125,000 |  |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares |  |  | $ 16.45 |  |  |  |  |  |  |  |  |  |  |  |
Shares paid for tax withholding for share based compensation (in shares) |  |  |  |  |  |  |  |  |  | 340,775 |  |  |  |  |
Shares paid for tax withholding for share based compensation, value | $ |  |  |  |  |  |  |  |  |  | $ 7,409,000 |  |  |  |  |
Shares paid for tax withholding for share based compensation, value per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 21.74 |  |  |  |  |
Restricted Stock | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |
Restricted Stock | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |
Restricted Stock | Employees, executives | Tranche One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  | 34 months |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period (in shares) |  |  |  | 99,772 |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, granted in period, fair value | $ |  |  |  | $ 2,200,000 |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares |  |  |  | $ 22.05 |  |  |  |  |  |  |  |  |  |  |
Number of executive officers granted shares | senior_executive |  |  |  | 7 |  |  |  |  |  |  |  |  |  |  |
Restricted Stock | Employees, executives | Tranche Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period (in shares) |  |  |  | 660,000 |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, granted in period, fair value | $ |  |  |  | $ 9,534,000 |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares |  |  |  | $ 14.45 |  |  |  |  |  |  |  |  |  |  |
Number of executive officers granted shares | senior_executive |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Award post-vesting holding period |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock | Employees, executives | Minimum | Tranche Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of shares that can vest based on attainment of minimum performance condition (in shares) |  |  |  | 480,000 |  |  |  |  |  |  |  |  |  |  |
Restricted Stock | Employees, executives | Maximum | Tranche Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of shares that can vest based on attainment of minimum performance condition (in shares) |  |  |  | 660,000 |  |  |  |  |  |  |  |  |  |  |
Restricted Stock | Non-employees, directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, granted in period, fair value | $ |  |  |  | $ 990,000 |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares |  |  |  | $ 22.05 |  |  |  |  |  |  |  |  |  |  |
Restricted Stock | Non-employees, directors | Tranche One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity instruments other than options, grants in period (in shares) |  |  |  | 44,902 |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares paid for tax withholding for share based compensation (in shares) |  |  |  |  |  |  |  |  |  | 3,307 |  |  |  |  |
Shares paid for tax withholding for share based compensation, value | $ |  |  |  |  |  |  |  |  |  | $ 70,000 |  |  |  |  |
Shares paid for tax withholding for share based compensation, value per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 21.22 |  |  |  |  |
Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for award (in shares) |  |  | 5,050,000 |  |  |  |  |  |  | 5,050,000 |  |  |  | 1,000,000 |
Number of additional shares authorized for award (in shares) |  | 1,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive Plan | Incentive Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for award (in shares) |  |  | 600,000 |  |  |  |  |  |  | 600,000 |  |  |  |  |
Quarterly Dividend |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, dividends, per share, cash paid (in dollars per share) | $ / shares |  |  | $ 0.075 | $ 0.075 | $ 0.075 | $ 0.0725 | $ 0.0725 | $ 0.0725 | $ 0.0725 | $ 0.225 |  | $ 0.29 |  |  |
Subsequent Event | Quarterly Dividend |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared, amount per share (in dollars per share) | $ / shares | $ 0.075 |  |  |  |  |  |  |  |  |  |  |  |  |  |

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