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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)			3 Months Ended
	Jan. 01, 2019 USD ($)	May 01, 2018	Mar. 31, 2019 USD ($) item	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Common stock dividend declared, percentage of shares outstanding		5.00%
Common stock dividend declared, ratio		0.05
Number of notes receivable | item			1
Allowance for doubtful accounts			$ 250,000		$ 250,000
ROU asset	$ 7,800,000		7,531,000
Operating lease liability	8,300,000		8,068,000
Reduction of accrued liabilities	$ 500,000		$ (1,270,000)	$ (1,826,000)

X

- Definition

The percentage of common stock declared in a stock dividend, as a percentage of outstanding shares.

+ References

No definition available.

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X

- Definition

The ratio of shares of common stock declared in a stock dividend to one share of outstanding stock.

+ References

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- Definition

Represents the number of notes receivable held by the company.

+ References

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- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
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- Definition

The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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