INCOME TAXES (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Line Items]
U.S. corporate income tax rate		35.00%	35.00%	35.00%
Write-down of net deferred tax assets due to enactment of the Tax Act		$ 836,000
Net operating loss carryforwards for state tax purposes		$ 27,948,000	$ 28,038,000
Operating loss carryforwards expiration beginning year, state		2025
Valuation allowance recorded		$ 817,000	0
Gross unrecognized tax benefits, total		131,000	168,000	$ 272,000	$ 332,000
Unrecognized tax benefits effecting income tax rate, if recognized		103,000	109,000	177,000
Interest (income) expense, net recognized from interest and penalties		0	0	0
Material changes to unrecognized tax positions over the next 12 months		$ 0
Earliest Tax Year [Member] | Internal Revenue Service [Member]
Income Tax Disclosure [Line Items]
Years that remain open to examination (Date)		2014
Earliest Tax Year [Member] | State And Local Jurisdiction
Income Tax Disclosure [Line Items]
Years that remain open to examination (Date)		2014
Latest Tax Year [Member] | Internal Revenue Service [Member]
Income Tax Disclosure [Line Items]
Years that remain open to examination (Date)		2017
Latest Tax Year [Member] | State And Local Jurisdiction
Income Tax Disclosure [Line Items]
Years that remain open to examination (Date)		2017
Valuation Allowance Of Deferred Tax Assets [Member]
Income Tax Disclosure [Line Items]
Valuation allowance recorded		$ 817,000	$ 0	$ 0	$ 800,000
Accounting Standards Update 2016-09 [Member]
Income Tax Disclosure [Line Items]
Excess tax benefit from share-based compensation		$ 5,491,000
Scenario Forecast [Member]
Income Tax Disclosure [Line Items]
U.S. corporate income tax rate	21.00%