GOODWILL AND INTANGIBLE ASSETS (Details - Definite Lived Intangibles) - USD ($) $ in Thousands		12 Months Ended
	Jan. 10, 2019	Dec. 31, 2019	Dec. 31, 2018
Intangible assets with definite lives
Cost		$ 261,705	$ 234,498
Accumulated Amortization		(90,267)	(38,941)
Net		171,438	195,557
Technology
Intangible assets with definite lives
Cost		116,200	112,400
Accumulated Amortization		(48,938)	(21,022)
Net		$ 67,262	$ 91,378
Technology | Weighted Average
Intangible assets with definite lives
Weighted Average Amortization Life		4 years 2 months 12 days	4 years 2 months 12 days
Customer lists
Intangible assets with definite lives
Cost		$ 77,300	$ 80,200
Accumulated Amortization		(12,452)	(7,746)
Net		$ 64,848	$ 72,454
Customer lists | Weighted Average
Intangible assets with definite lives
Weighted Average Amortization Life		13 years 2 months 12 days	12 years 10 months 24 days
Trademarks and trade names
Intangible assets with definite lives
Cost		$ 17,200	$ 16,742
Accumulated Amortization		(6,407)	(3,730)
Net		$ 10,793	$ 13,012
Trademarks and trade names | Weighted Average
Intangible assets with definite lives
Weighted Average Amortization Life		4 years 10 months 24 days	4 years 8 months 12 days
Tenant leases
Intangible assets with definite lives
Accumulated Amortization			$ (468)
Website content
Intangible assets with definite lives
Cost		$ 51,000	24,900
Accumulated Amortization		(22,467)	(6,192)
Net		$ 28,533	$ 18,708
Website content | Weighted Average
Intangible assets with definite lives
Weighted Average Amortization Life		3 years	3 years
Other
Intangible assets with definite lives
Cost		$ 5	$ 256
Accumulated Amortization		(3)	(251)
Net		$ 2	$ 5
Other | Weighted Average
Intangible assets with definite lives
Weighted Average Amortization Life		3 years	3 years
ValuePenguin
Intangible assets with definite lives
Total intangible assets with definite lives, net	$ 31,600
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years 1 month 6 days
ValuePenguin | Technology
Intangible assets with definite lives
Total intangible assets with definite lives, net	$ 4,200
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years
ValuePenguin | Trademarks and trade names
Intangible assets with definite lives
Total intangible assets with definite lives, net	$ 1,300
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
ValuePenguin | Website content
Intangible assets with definite lives
Total intangible assets with definite lives, net	$ 26,100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years