SHAREHOLDERS' EQUITY - Narrative (Details)			3 Months Ended						6 Months Ended		12 Months Ended
	Apr. 29, 2021 $ / shares	Jan. 30, 2020 shares	Mar. 31, 2021 USD ($) executive $ / shares shares	Dec. 31, 2020 USD ($) executive $ / shares shares	Sep. 30, 2020 $ / shares	Jun. 30, 2020 $ / shares	Mar. 31, 2020 $ / shares	Dec. 31, 2019 $ / shares	Mar. 31, 2021 USD ($) $ / shares shares	Mar. 31, 2020 $ / shares	Sep. 30, 2020 $ / 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			$ 0.08				$ 0.075		$ 0.16	$ 0.15
Stock repurchase program, authorized amount | $												$ 50,000,000		$ 50,000,000
Stock repurchase program, remaining authorized repurchase amount | $			$ 57,955,000						$ 57,955,000
Shares paid for tax withholding for share based compensation, value | $			$ 0
Restricted Stock and Restricted Stock Units
Class of Stock [Line Items]
Equity instruments other than options, grants in period (in shares)				511,624
Restricted Stock and Restricted Stock Units, Subject to Performance Conditions
Class of Stock [Line Items]
Award vesting period				3 years
Equity instruments other than options, grants in period (in shares)				226,811
Equity instruments other than options, granted in period, fair value | $				$ 5,500,000
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares				$ 24.25
Restricted Stock and Restricted Stock Units, Subject to Performance Conditions | Executive Officer
Class of Stock [Line Items]
Equity instruments other than options, grants in period (in shares)			203,282
Equity instruments other than options, granted in period, fair value | $			$ 4,923,000
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares			$ 24.22
Number of executive officers granted shares | executive			4
Restricted Stock and Restricted Stock Units, Subject to Performance Conditions | Senior Executives
Class of Stock [Line Items]
Award vesting period			4 years
Equity instruments other than options, grants in period (in shares)			528,000
Number of executive officers granted shares | executive			2
Award post-vesting holding period			2 years
Restricted Stock and Restricted Stock Units, Subject to Performance Conditions | Minimum | Executive Officer
Class of Stock [Line Items]
Award vesting period			34 months
Restricted Stock and Restricted Stock Units, Subject to Performance Conditions | Maximum | Executive Officer
Class of Stock [Line Items]
Award vesting period			60 months
Restricted Stock and Restricted Stock Units, Not Subject to Performance Conditions | Executive Officer
Class of Stock [Line Items]
Award vesting period				3 years
Equity instruments other than options, grants in period (in shares)				284,813
Equity instruments other than options, granted in period, fair value | $				$ 5,913,000
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares				$ 20.76
Number of executive officers granted shares | executive				5
Restricted Stock
Class of Stock [Line Items]
Equity instruments other than options, grants in period (in shares)			731,282
Equity instruments other than options, granted in period, fair value | $			$ 7,824,000
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares			$ 14.82
Shares paid for tax withholding for share based compensation (in shares)									133,027
Shares paid for tax withholding for share based compensation, value | $									$ 2,774,000
Shares paid for tax withholding for share based compensation, value per share (in dollars per share) | $ / shares									$ 20.85
Restricted Stock | Non-employees, directors
Class of Stock [Line Items]
Award vesting period			3 years
Equity instruments other than options, grants in period (in shares)			44,424
Equity instruments other than options, granted in period, fair value | $			$ 1,080,000
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares			$ 24.31
Restricted Stock | Executive Officer
Class of Stock [Line Items]
Number of executive officers granted shares | executive			6
Restricted Stock | Minimum
Class of Stock [Line Items]
Award vesting period									3 years
Number of shares vested in period			384,000
Restricted Stock | Maximum
Class of Stock [Line Items]
Award vesting period									4 years
Number of shares vested in period			528,000
Restricted Stock Units
Class of Stock [Line Items]
Shares paid for tax withholding for share based compensation (in shares)									6,507
Shares paid for tax withholding for share based compensation, value | $									$ 135,000
Shares paid for tax withholding for share based compensation, value per share (in dollars per share) | $ / shares									$ 20.75
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
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)			437,276						437,276
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			$ 0.08	$ 0.08	$ 0.075	$ 0.075	$ 0.075	$ 0.075	$ 0.16		$ 0.30
Quarterly Dividend | Subsequent Event
Class of Stock [Line Items]
Dividends declared, amount per share (in dollars per share) | $ / shares	$ 0.08