The percentage points subtracted from the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Balance Type:	credit
Period Type:	instant

- Definition

The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- References

No definition available.

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Balance Type:	na
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- Definition

The financing charge for leasing arrangements meeting the criteria for capitalization.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
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- Definition

The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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-Publisher FASB
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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

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.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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DEBT (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
DEBT (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 28, 2019
Capital lease obligations
DEBT
Company debt consisting of capital leases		$ 800	$ 1,300
Assets acquired under capital leases
Interest expenses for capital lease obligations		60	80	$ 70
Capital lease obligations \| Assets acquired under capital leases
Assets acquired under capital leases
Net book value		4,900	5,300
Accumulated depreciation		4,600	$ 4,200
Comerica \| Line of credit
DEBT
Maximum borrowing capacity	$ 10,000
Outstanding borrowings		0
Comerica \| Line of credit \| Base (prime) rate \| Minimum
DEBT
Percentage to be subtracted to compute the variable rate on the debt instrument	1.00%
Comerica \| Line of credit \| Base (prime) rate \| Maximum
DEBT
Percentage to be subtracted to compute the variable rate on the debt instrument	1.50%
Comerica \| Line of credit \| London Interbank Offered Rates \| Minimum
DEBT
Percentage that needs to be added to compute the variable rate on the debt instrument	1.25%
Comerica \| Line of credit \| London Interbank Offered Rates \| Maximum
DEBT
Percentage that needs to be added to compute the variable rate on the debt instrument	1.75%
Comerica \| Standby letters of credit
DEBT
Maximum borrowing capacity	$ 4,000
Amount outstanding		0
Comerica \| Standby letters of credit \| Minimum
DEBT
Fee (as a percent)	1.00%
Comerica \| Standby letters of credit \| Maximum
DEBT
Fee (as a percent)	1.50%
HSBC China \| Line of credit
DEBT
Maximum borrowing capacity					$ 15,000
Amount outstanding		$ 11,700
Interest rate (as a percent)		5.50%