FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Fair Value Measurement [Abstract]
Proceeds from sale of marketable securities within rabbi trust	$ 1,348	$ 0
Transfers in out between levels	0	0
Fair value of total debt	117,900	124,800
Carrying amount of long-term debt	114,200	122,700
Investments held in Rabbi Trust [Member]
Fair Value Measurement [Abstract]
Available-for-sale securities measured at fair value	1,400	1,500
Investments held in Rabbi Trust [Member] \| SERP [Member]
Fair Value Measurement [Abstract]
Gross unrealized gains associated with the investment held in the rabbi trust		200
Realized gains on sale of securities	200
Proceeds from sale of marketable securities within rabbi trust	1,300
Nonrecurring [Member]
Fair Value Measurement [Abstract]
Financial assets accounted at fair value	$ 0	$ 0

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The amount of the transfers of assets or liabilities measured on a recurring basis between different levels of the fair value hierarchy.

+ References

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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- Definition

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

+ References

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-Publisher FASB
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- Definition

The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.

+ References

No definition available.

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