DEBT (Details) $ in Thousands, ¥ in Millions		6 Months Ended	12 Months Ended
		May 02, 2021 USD ($) Tool	Oct. 31, 2020 USD ($)	May 02, 2021 CNY (¥) Tool	Feb. 28, 2021 USD ($)	Dec. 31, 2020 USD ($)	Nov. 30, 2018 USD ($)	Nov. 30, 2018 CNY (¥)
Debt Instruments [Abstract]
Short-term debt		$ 0	$ 4,708
Weighted-average interest rate of short -term debt			2.02%
Long Term Debt Maturing In Year One [Abstract]
Next 12 months		25,658	$ 8,970
Long-term Debt [Abstract]
Months 13 - 24		22,136	15,142
Months 25 - 36		24,704	13,406
Months 37 - 48		32,330	9,789
Months 49 - 60		9,274	9,432
Thereafter		0	7,211
Long-term debt		88,444	54,980
Finance lease amount		41,832	0
Xiamen Project Loans [Member]
Long Term Debt Maturing In Year One [Abstract]
Next 12 months		6,955	6,705
Long-term Debt [Abstract]
Months 13 - 24		10,047	7,334
Months 25 - 36		10,046	9,592
Months 37 - 48		10,046	9,789
Months 49 - 60		9,274	9,432
Thereafter		0	7,211
Long-term debt		$ 39,413	$ 43,358
Interest rate at balance sheet date		4.65%	4.90%
Basis spread on interest rates		0.00%	0.25%
Maturity date		Dec. 31, 2025
Periodic payment amount		Increases as loans mature
Periodic payment frequency		Semiannual, on individual loans
Loan collateral (carrying amount)		$ 93,345	$ 94,459
Maximum borrowing capacity							$ 53,300	¥ 345.0
Amount outstanding		46,400		¥ 300.0
Xiamen Working Capital Loans [Member]
Long Term Debt Maturing In Year One [Abstract]
Next 12 months		8,854	2,265
Long-term Debt [Abstract]
Months 13 - 24		989	7,808
Months 25 - 36		3,462	3,814
Months 37 - 48		0	0
Months 49 - 60		0	0
Thereafter		0	0
Long-term debt		$ 4,451	$ 11,622
Maturity date		Jul. 31, 2023
Periodic payment amount		Increases as loans mature
Periodic payment frequency		Semiannual, on individual loans
Maximum borrowing capacity		$ 25,000
Xiamen Working Capital Loans [Member] | Minimum [Member]
Long-term Debt [Abstract]
Interest rate at balance sheet date		4.53%	4.53%
Basis spread on interest rates		0.6775%	0.40%
Xiamen Working Capital Loans [Member] | Maximum [Member]
Long-term Debt [Abstract]
Interest rate at balance sheet date		4.61%	4.61%
Basis spread on interest rates		0.76%	0.76%
Xiamen Working Capital Loans (value added tax component) [Member]
Long-term Debt [Abstract]
Maximum borrowing capacity | ¥				140.0
Amount outstanding under credit facility		$ 13,300		86.1
Xiamen Working Capital Loans, Fund Operations [Member]
Long-term Debt [Abstract]
Maximum borrowing capacity | ¥				60.0
Amount outstanding | ¥				¥ 0.0
Hefei Equipment Loan [Member]
Long Term Debt Maturing In Year One [Abstract]
Next 12 months		2,318
Long-term Debt [Abstract]
Months 13 - 24		4,637
Months 25 - 36		4,637
Months 37 - 48		1,005
Months 49 - 60		0
Thereafter		0
Long-term debt		$ 10,279
Interest rate at balance sheet date		4.20%
Basis spread on interest rates		(0.45%)
Maturity date		Sep. 30, 2026
Periodic payment amount	[1]	Varies
Periodic payment frequency	[2]	Semiannual
Loan collateral (carrying amount)		$ 88,150
Percent of repayment on approved loan principal in each first five semiannual loan repayments		7.50%		7.50%
Percent of repayment on approved loan principal in each last five semiannual loan repayments		12.50%		12.50%
Maximum borrowing capacity		$ 30,900		¥ 200.0
Amount outstanding		$ 12,600		¥ 81.5
Number of lithography tools to be purchased | Tool		2		2
Finance Leases [Member]
Long Term Debt Maturing In Year One [Abstract]
Next 12 months		$ 7,531
Long-term Debt [Abstract]
Months 13 - 24		6,463
Months 25 - 36		6,559
Months 37 - 48		21,279
Months 49 - 60		0
Thereafter		0
Long-term debt		$ 34,301
Periodic payment amount	[3]	Various
Periodic payment frequency		Monthly
Loan collateral (carrying amount)	[4]	$ 42,248
Finance lease contract term		5 years		5 years
Finance lease amount					$ 7,200	$ 35,500
Short-term obligation						$ 3,500
Amended and Restated Credit Agreement [Member]
Long-term Debt [Abstract]
Maximum borrowing capacity		$ 100,000
Amount outstanding under credit facility		$ 0
Term of loan		5 years
Current borrowing capacity		$ 50,000
Cash limit for dividends, distributions and redemption on equity		$ 50,000
Effective interest rate		1.11%		1.11%

[1] First five loan repayments will each be for 7.5 percent of the approved 200 million RMB loan principal; last five installments will each be for 12.5 percent of the approved loan principal.

[2] Semiannual repayments commence in March 2022.

[3] See Note 8 for interest rates on lease liabilities, maturity dates and periodic payment amounts.

[4] Represents the carrying amount at the balance sheet date of the related right-of-use assets, in which the lessors have secured interests.