GOODWILL AND INTANGIBLE ASSETS (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 25,345	$ 25,456
Accumulated Amortization	(16,612)	(15,374)
Total amortization	8,733	10,082
Business relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,918	9,918
Accumulated Amortization	(3,328)	(2,841)
Total amortization	$ 6,590	$ 7,077
Weighted Average Remaining Life	8 years 2 months 12 days	8 years 7 months 6 days
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 7,709	$ 7,832
Accumulated Amortization	(5,630)	(4,959)
Total amortization	$ 2,079	$ 2,873
Weighted Average Remaining Life	1 year 8 months 12 days	2 years 2 months 12 days
Content
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,826	$ 3,814
Accumulated Amortization	(3,826)	(3,814)
Total amortization	$ 0	$ 0
Weighted Average Remaining Life	0 years	0 years
Domains and data licenses
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,869	$ 2,869
Accumulated Amortization	(2,805)	(2,748)
Total amortization	$ 64	$ 121
Weighted Average Remaining Life	1 year 9 months 18 days	1 year 8 months 12 days
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 877	$ 877
Accumulated Amortization	(877)	(872)
Total amortization	$ 0	$ 5
Weighted Average Remaining Life	0 years	2 months 12 days
User relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 146	$ 146
Accumulated Amortization	(146)	(140)
Total amortization	$ 0	$ 6
Weighted Average Remaining Life	0 years	2 months 12 days