SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Significant Accounting Policies [Line Items]
Property, plant and equipment, depreciation methods	Depreciation and amortization are calculated using the straight-line method over the estimated useful lives of the assets.
Advertising expense	$ 662	$ 528	$ 495
Reclassification of gains recognized in net income (loss)	5	30
Reclassification of gains recognized in net income (loss), Tax	2	$ 12
Reclassification for stranded tax effects resulting from new federal corporate income tax rate	$ 226
Land Improvements [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	15 years
Minimum [Member] | Furniture, Fixtures and Equipment [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Minimum [Member] | Computer Hardware and Data Handling Equipment [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Minimum [Member] | Building and Building Improvements [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	10 years
Maximum [Member] | Furniture, Fixtures and Equipment [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	10 years
Maximum [Member] | Computer Hardware and Data Handling Equipment [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	5 years
Maximum [Member] | Building and Building Improvements [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	40 years