UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Revenue	$ 16,554	$ 17,691	$ 50,461	$ 48,491
Cost of revenue	4,062	4,292	12,429	13,022
Gross profit	12,492	13,399	38,032	35,469
Operating expenses:
Research and development	5,781	6,931	18,375	21,439
Sales and marketing	5,130	5,644	15,969	17,501
General and administrative	4,124	5,242	13,063	17,674
Fair value adjustments to contingent consideration liability			(200)	700
Restructuring and other charges	307	691	1,097	1,587
Total operating expenses	15,342	18,508	48,504	58,201
Operating loss	(2,850)	(5,109)	(10,472)	(22,732)
Other income (expenses):
Interest Expense	(7)	0	(12)	0
Interest income	6	0	31	89
Gain (Loss) on Sale of Investments	(37)	0	(90)	12,338
Other income (expenses), net	(104)	85	63	197
Total other income (expenses), net	(142)	85	(8)	12,624
Loss from continuing operations before income taxes	(2,992)	(5,024)	(10,480)	(10,108)
Income tax expense	316	233	606	515
Net loss from continuing operations	(3,308)	(5,257)	(11,086)	(10,623)
Net loss from discontinued operations, net of tax	(1)	(997)	(2,466)	(3,872)
Net loss	(3,309)	(6,254)	(13,552)	(14,495)
Net loss attributable to noncontrolling interests of continuing operations	(77)	(54)	(196)	(106)
Net income (loss) attributable to noncontrolling interests of discontinued operations	6	(232)	(364)	(752)
Net loss attributable to RealNetworks	(3,238)	(5,968)	(12,992)	(13,637)
Net loss from continuing operations attributable to RealNetworks	(3,231)	(5,203)	(10,890)	(10,517)
Net loss from discontinued operations attributable to RealNetworks	(7)	(765)	(2,102)	(3,120)
Net loss attributable to RealNetworks	$ (3,238)	$ (5,968)	$ (12,992)	$ (13,637)
Continuing operations, basic (USD per share)	$ (0.08)	$ (0.14)	$ (0.28)	$ (0.28)
Discontinued operations, basic (USD per share)	0	(0.02)	(0.06)	(0.08)
Basic net income (loss) per share (USD per share)	(0.08)	(0.16)	(0.34)	(0.36)
Continuing operations, diluted (USD per share)	(0.08)	(0.14)	(0.28)	(0.28)
Discontinued operations, diluted (USD per share)	0	(0.02)	(0.06)	(0.08)
Diluted net income (loss) per share (USD per share)	$ (0.08)	$ (0.16)	$ (0.34)	$ (0.36)
Shares used to compute basic net income (loss) per share	38,270	38,062	38,247	37,944
Shares used to compute diluted net income (loss) per share	38,270	38,062	38,247	37,944