LONG-TERM DEBT (Details) $ in Thousands, ¥ in Millions		1 Months Ended	3 Months Ended
	Aug. 25, 2019 USD ($)	Jul. 28, 2019 USD ($)	Feb. 02, 2020 USD ($)	Feb. 02, 2020 CNY (¥)	Jan. 27, 2019 USD ($)	Feb. 02, 2020 CNY (¥)	Oct. 31, 2019 USD ($)
Long-term debt [Abstract]
Long-term debt			$ 44,408				$ 44,029
Current portion of long-term debt			(7,959)				(2,142)
Long-term debt			$ 36,449				$ 41,887
Weighted-average interest rate of short -term debt			3.90%			3.90%	3.84%
Repayments of debt			$ 389		$ 0
Proceeds from debt			1,140		$ 28,180
Maturities of Long-term Debt [Abstract]
2020 (remainder of)			1,788
2021			8,449
2022			12,648
2023			3,501
2024			6,704
Thereafter			11,318
Project Loans [Member]
Long-term debt [Abstract]
Long-term debt			$ 35,094				$ 34,490
Interest rate percentage			4.90%			4.90%
Maturity date of debt			Dec. 31, 2025	Dec. 31, 2025
Maximum borrowing capacity			$ 50,000
Consolidated assets pledged			92,900
Proceeds from credit facility			$ 35,100	¥ 243.4
Date of first required payment			Jun. 30, 2020	Jun. 30, 2020
Maturities of Long-term Debt [Abstract]
2020 (remainder of)			$ 1,298
2021			6,488
2022			5,785
2023			3,501
2024			6,704
2025			6,416
2026			$ 4,902
Working Capital Loans [Member]
Long-term debt [Abstract]
Maturity date of debt			Jan. 31, 2022	Jan. 31, 2022
Maximum borrowing capacity			$ 25,000
Maturities of Long-term Debt [Abstract]
2020 (remainder of)			490
2021			1,961
2022			$ 6,863
Working Capital Loans [Member] | Minimum [Member]
Long-term debt [Abstract]
Basis spread on variable rate			0.2575%	0.2575%
Working Capital Loans [Member] | Maximum [Member]
Long-term debt [Abstract]
Basis spread on variable rate			0.6775%	0.6775%
Working Capital Loans (value added tax component) [Member]
Long-term debt [Abstract]
Long-term debt			$ 9,314				$ 9,539
Maximum borrowing capacity | ¥						¥ 140.0
Repayments of debt			400
Amount outstanding under credit facility			$ 9,300			¥ 64.6
Working Capital Loans (value added tax component) [Member] | Minimum [Member]
Long-term debt [Abstract]
Interest rate percentage			4.80%			4.80%
Working Capital Loans (value added tax component) [Member] | Maximum [Member]
Long-term debt [Abstract]
Interest rate percentage			4.90%			4.90%
Working Capital Loans, Fund Operations [Member]
Long-term debt [Abstract]
Maximum borrowing capacity | ¥						¥ 60.0
Proceeds from credit facility			$ 6,500	¥ 44.8
Term of loan			1 year	1 year
Working Capital Loans, Fund Operations [Member] | Minimum [Member]
Long-term debt [Abstract]
Interest rate percentage			4.40%			4.40%
Working Capital Loans, Fund Operations [Member] | Maximum [Member]
Long-term debt [Abstract]
Interest rate percentage			4.60%			4.60%
Amended and Restated Credit Agreement [Member]
Long-term debt [Abstract]
Maximum borrowing capacity			$ 100,000
Term of loan			5 years	5 years
Current borrowing capacity			$ 50,000
Cash limit for dividends, distributions and redemption on equity			50,000
Amount outstanding under credit facility			0
Available borrowing capacity			$ 50,000
Effective interest rate			2.65%			2.65%
Equipment Loan [Member]
Long-term debt [Abstract]
Maximum borrowing capacity		$ 35,000
Proceeds from debt	$ 3,500
Equipment Loan [Member] | LIBOR [Member]
Long-term debt [Abstract]
Basis spread on variable rate		1.00%
Term of variable rate		30 days
Effective interest rate			2.67%			2.67%