Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Schedule of Components of Deferred Tax Assets and Liabilities (Details)

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INCOME TAXES - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Deferred tax assets    
Loss carryforwards $ 76,153 $ 85,638
Deferred revenue 21,839 17,043
Tax credits 16,574 17,416
Disallowed interest 12,132 8,958
Other accruals and reserves not currently deductible for tax purposes 8,192 16,339
Capitalized research and development 7,811 0
Lease obligations 1,747 3,413
Inventory 1,374 924
Accrued warranty expense 569 650
Acquired intangibles 454 2,660
Gross deferred tax assets 146,845 153,041
Valuation allowance (143,263) (137,814)
Total deferred tax assets, net of valuation allowance 3,582 15,227
Deferred tax liabilities    
Depreciation (1,440) (1,440)
Lease assets (1,670) (3,413)
Other (1,013) (967)
Total deferred tax liabilities (4,123) (5,820)
Net deferred tax assets (liabilities) $ (541)  
Net deferred tax assets (liabilities)   $ 9,407