INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 51,854	$ 65,214	$ 45,553
Effective tax rate	22.00%	29.10%	20.90%
Federal corporate rate	21.00%	21.00%	31.50%
Deferred tax asset, foreign net operating losses	$ 9,936
Deferred tax assets, valuation allowance	8,619	$ 8,846
Decrease in deferred tax assets valuation allowance	272	1,965
Recorded liabilities for interest and penalties related to uncertain tax positions	1,845	1,093
Unrecognized tax benefits	9,947	4,960	$ 4,563
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	$ 2,478	$ 2,523