INCOME TAXES - Components of Deferred Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Deferred tax liabilities:
Fixed assets	$ (36,789)	$ (39,376)
Intangible assets	(49,637)	(57,939)
Others	(25,818)	(14,879)
Total deferred tax liabilities	(112,244)	(112,194)
Deferred tax assets:
Fixed assets	58,623	67,980
Intangible assets	6,568	7,442
Deferred compensation	17,456	13,864
Inventory valuation	26,742	11,082
Provision for doubtful accounts	5,120	4,797
Net operating loss and other carryforwards	1,820,980	1,944,782
Others	207,910	243,016
Total deferred tax assets	2,143,399	2,292,963
Valuation allowances	(1,939,279)	(2,083,082)
Total deferred tax assets, net of valuation allowances	204,120	209,881
Net deferred tax asset	91,876	97,687
The net deferred tax asset is classified as follows:
Long-term asset	162,737	164,611
Long-term liability	(70,861)	$ (66,924)
Deferred tax asset associated with tax loss and tax credit carryforwards of indefinite duration	1,900,000
Valuation allowance relating to deferred tax assets	81,900
Tax losses and other carryforwards	1,919,267
Undistributed earnings of subsidiaries	1,400,000
2021 - 2026
The net deferred tax asset is classified as follows:
Tax losses and other carryforwards	613,769
2027 - 2032
The net deferred tax asset is classified as follows:
Tax losses and other carryforwards	476,336
2033 and post
The net deferred tax asset is classified as follows:
Tax losses and other carryforwards	199,327
Indefinite
The net deferred tax asset is classified as follows:
Tax losses and other carryforwards	629,835
Singapore | Subsidiaries
The net deferred tax asset is classified as follows:
Deferred tax liability not recognized undistributed earnings of its subsidiaries	128,000
China | Subsidiaries
The net deferred tax asset is classified as follows:
Undistributed foreign earnings that applicable foreign withholding taxes have been provided	97,600
Deferred tax liability on undistributed foreign earnings	$ 8,700