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SHORT-TERM BORROWINGS (Details)
¥ in Thousands, $ in Thousands

3 Months Ended

Mar. 31, 2021

USD ($)

Mar. 31, 2020

USD ($)

Mar. 31, 2021

CNY (¥)

Dec. 31, 2020

USD ($)

Short-Term Borrowings [Abstract]

Short-term borrowings

$ 23,490

$ 26,147

Interest expense related to short-term borrowings

189

$ 111

Line of Credit Due on April 1, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[1]

$ 0

4,599

Maximum borrowing capacity | ¥

¥ 80,000

Annual interest rate

4.70%

Line of credit due date

Mar. 23, 2021

Line of Credit Due on June 27, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[1]

$ 1,370

1,380

Maximum borrowing capacity | ¥

80,000

Annual interest rate

4.25%

Line of credit due date

Jun. 27, 2021

Line of Credit Due on April 29, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[1]

$ 0

820

Maximum borrowing capacity | ¥

80,000

Annual interest rate

2.80%

Line of credit due date

Mar. 23, 2021

Line of Credit Due on June 27, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[1]

$ 2,080

2,080

Maximum borrowing capacity | ¥

80,000

Annual interest rate

2.70%

Line of credit due date

Jun. 27, 2021

Line of Credit Due on September 30, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[1]

$ 2,855

0

Maximum borrowing capacity | ¥

80,000

Annual interest rate

2.50%

Line of credit due date

Sep. 30, 2021

Line of Credit Due on April 12, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

$ 1,522

1,533

Maximum borrowing capacity | ¥

20,000

Annual interest rate

4.65%

Line of credit due date

Apr. 12, 2021

Line of Credit Due on May 24, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

$ 1,522

1,533

Maximum borrowing capacity | ¥

20,000

Annual interest rate

3.65%

Line of credit due date

May 24, 2021

Line of Credit Due on May 27, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[2]

$ 2,557

2,575

Maximum borrowing capacity | ¥

70,000

Annual interest rate

4.68%

Line of credit due date

May 27, 2021

Line of Credit Due on June 27, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[2]

$ 0

1,380

Maximum borrowing capacity | ¥

70,000

Annual interest rate

4.68%

Line of credit due date

Mar. 29, 2021

Line of Credit Due on May 28, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[2]

$ 2,442

2,442

Maximum borrowing capacity | ¥

70,000

Annual interest rate

3.48%

Line of credit due date

May 28, 2021

Line of Credit Due on June 7, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[2]

$ 1,521

1,521

Maximum borrowing capacity | ¥

70,000

Annual interest rate

3.50%

Line of credit due date

Jun. 07, 2021

Line of Credit Due on June 16, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

^[2]

$ 1,837

1,838

Maximum borrowing capacity | ¥

70,000

Annual interest rate

3.50%

Line of credit due date

Jun. 16, 2021

Line of Credit Due on August 10, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

$ 1,370

1,380

Maximum borrowing capacity | ¥

80,000

Annual interest rate

3.85%

Line of credit due date

Aug. 10, 2021

Line of Credit Due on August 25, 2021 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

$ 3,044

3,066

Maximum borrowing capacity | ¥

80,000

Annual interest rate

3.85%

Line of credit due date

Aug. 25, 2021

Line of Credit Due on February 1, 2022 [Member]

Short-Term Borrowings [Abstract]

Short-term borrowings

$ 1,370

$ 0

Maximum borrowing capacity | ¥

¥ 80,000

Annual interest rate

3.85%

Line of credit due date

Feb. 01, 2022

[1]	Guaranteed by ACM’s Chief Executive Officer
[2]	Guaranteed by ACM’s Chief Executive Officer and CleanChip

X

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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- Definition

The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.

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- Definition

The effective interest rate during the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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