TAXES - Components of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
DEFERRED TAX ASSETS
Stock-based compensation	$ 2,018	$ 1,434
Compensation and benefits	466	555
Bad debt reserves	1	58
Accrued expenses	679	512
Fixed assets and depreciation	1,048	896
Base stock	4	11
State taxes		(31)
NOLs and credit carry-forwards	1,761	2,219
Deferred income tax asset	5,977	5,654
DEFERRED TAX LIABILITIES
Intangibles and amortization	(600)	(855)
Prepaid expenses	(1,067)	(890)
Real estate taxes	(180)	(191)
Other reserves	(5)	(14)
Federal deduction on deferred state taxes	(98)	(160)
Deferred income tax liability	(1,950)	(2,110)
NET DEFERRED INCOME TAX ASSET	$ 4,027	$ 3,544