Represents information regarding non-default rate of interest.

No definition available.

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- Definition

Represents amount of tangible net worth covenant to increase the minimum required compliance.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents amount of tangible net worth.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- 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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Data Type:	num:percentItemType
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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.22(a)(2))
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-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of the amount outstanding under the credit facility.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of the portion of long-term, uncollateralized debt obligations due within one year or the normal operating cycle, if longer.

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Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

+ Details

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

- Details

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- Details

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- Details

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- Details

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LONG-TERM OBLIGATIONS (Details) - USD ($) $ in Thousands			9 Months Ended
LONG-TERM OBLIGATIONS (Details) - USD ($) $ in Thousands	Dec. 20, 2018	Dec. 19, 2018	Sep. 30, 2019	Dec. 31, 2018
Line of Credit Facility [Line Items]
Credit facility maturity date			May 31, 2022
Long-term obligations due within one year			$ 368	$ 285
First Tennessee Bank National Association \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility	$ 50,000
Description of reference rate basis	to one month LIBOR rate plus an applicable margin of either 1.00% or 1.25% depending on the Company's Leverage Ratio	one month LIBOR rate plus 150 basis points
Variable interest rate in addition to reference rate		1.50%
Minimum tangible net worth required for compliance	$ 160,000	$ 130,000
Tangible net worth			$ 236,000
Debt instrument description of non-default rate of interest			LIBOR Rate plus 1.00% or 1.25% per annum, depending on the leverage ratio.
Line of credit outstanding borrowings			$ 10,000	15,000
First Tennessee Bank National Association \| Revolving Credit Facility \| Minimum
Line of Credit Facility [Line Items]
Variable interest rate in addition to reference rate	1.00%		1.00%
Non-usage fee for current loan agreement in annual amount percentage			0.15%
First Tennessee Bank National Association \| Revolving Credit Facility \| Maximum
Line of Credit Facility [Line Items]
Variable interest rate in addition to reference rate	1.25%		1.25%
Non-usage fee for current loan agreement in annual amount percentage			0.35%
Jige International S.A. \| Banque Europeenne Du Credit Mutuel
Line of Credit Facility [Line Items]
Unsecured fixed rate loan			$ 460	760
Unsecured debt, long-term obligations			92	475
Unsecured debt, long-term obligations due within one year			$ 368	$ 285
Maturity date			Sep. 30, 2020
Interest rate per annum			0.30%