Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock	Accumulated Other Comprehensive Income (Loss) [Member]	Non-controlling Interest [Member]	Accumulated Deficit [Member]	Series C-1 Convertible Preferred Stock [Member]	Series A-1 convertible preferred stock [Member]
Stockholders' Equity, Beginning Balance at Dec. 31, 2019	$ (231,337)	$ 1,378	$ 1,059,583		$ (1,324)	$ (5,981)	$ (1,284,993)		$ 0
Temporary Equity, Beginning Balance at Dec. 31, 2019								$ 26,917
Balance, shares at Dec. 31, 2019		137,819							32
Net income (loss)	(45,271)					(597)	(44,674)
Other comprehensive income	1,227				1,227
Share-based compensation	2,397		2,397
Shares sold at the market	65,123	$ 247	64,876
Shares sold at the market, shares		24,716
Amendment of 2015 warrants and issuance of 2020 warrants	3,145		3,145
Payment of consultant in shares	12	$ 0	12
Payment of consultant in shares, shares		4
Exercise of stock options and employee share purchases	2,204	$ 8	2,196
Exercise of stock options and employee share purchases, shares		765
Stockholders' Equity, Ending Balance at Mar. 31, 2020	(202,500)	$ 1,633	1,132,209		(97)	(6,578)	(1,329,667)		$ 0
Temporary Equity, shares at Mar. 31, 2020								12
Temporary Equity, Ending Balance at Mar. 31, 2020								$ 26,917
Balance, shares at Mar. 31, 2020		163,304							32
Temporary Equity, shares at Dec. 31, 2019								12
Stockholders' Equity, Beginning Balance at Dec. 31, 2019	(231,337)	$ 1,378	1,059,583		(1,324)	(5,981)	(1,284,993)		$ 0
Temporary Equity, Beginning Balance at Dec. 31, 2019								$ 26,917
Balance, shares at Dec. 31, 2019		137,819							32
Net income (loss)	(145,161)
Other comprehensive income	2,557
Stockholders' Equity, Ending Balance at Sep. 30, 2020	(206,323)	$ 1,892	1,226,687		1,233	(7,835)	(1,428,300)		$ 0
Temporary Equity, shares at Sep. 30, 2020								12
Temporary Equity, Ending Balance at Sep. 30, 2020								$ 26,917
Balance, shares at Sep. 30, 2020		189,157							32
Temporary Equity, shares at Dec. 31, 2019								12
Stockholders' Equity, Beginning Balance at Mar. 31, 2020	(202,500)	$ 1,633	1,132,209		(97)	(6,578)	(1,329,667)		$ 0
Temporary Equity, Beginning Balance at Mar. 31, 2020								$ 26,917
Balance, shares at Mar. 31, 2020		163,304							32
Net income (loss)	(48,244)					(764)	(47,480)
Other comprehensive income	466				466
Share-based compensation	2,464		2,464
Shares sold at the market	19,907	$ 73	19,834
Shares sold at the market, shares		7,290
Issuance of shares for business acquisition	900	$ 4	896
Issuance of shares for business acquisition, shares		405
Payment of CEO payroll in shares	88		88
Payment of CEO payroll in shares, shares		31
Payment of consultant in shares	31		31
Payment of consultant in shares, shares		10
Exercise of stock options	924	$ 3	921
Exercise of stock options, shares		290
Vesting of nonvested shares		$ 1	(1)
Vesting of nonvested shares, shares		88
Stockholders' Equity, Ending Balance at Jun. 30, 2020	(225,964)	$ 1,714	1,156,442		369	(7,342)	(1,377,147)		$ 0
Temporary Equity, shares at Jun. 30, 2020								12
Temporary Equity, Ending Balance at Jun. 30, 2020								$ 26,917
Balance, shares at Jun. 30, 2020		171,418							32
Temporary Equity, shares at Mar. 31, 2020								12
Net income (loss)	(51,646)					(493)	(51,153)
Other comprehensive income	864				864
Share-based compensation	2,620		2,620
Shares sold at the market	46,401	$ 123	46,278
Shares sold at the market, shares		12,281
Shares sold under Stock Purchase Agreement, values	20,000	$ 50	19,950
Shares sold under Stock Purchase Agreement, shares		4,963
Payment of CEO payroll in shares	103		103
Payment of CEO payroll in shares, shares		27
Payment of consultant in shares	19		19
Payment of consultant in shares, shares		5
Exercise of stock options and employee share purchases	1,280	$ 4	1,276
Exercise of stock options and employee share purchases, shares		423
Vesting of nonvested shares		$ 1	(1)
Vesting of nonvested shares, shares		40
Stockholders' Equity, Ending Balance at Sep. 30, 2020	(206,323)	$ 1,892	1,226,687		1,233	(7,835)	(1,428,300)		$ 0
Temporary Equity, shares at Sep. 30, 2020								12
Temporary Equity, Ending Balance at Sep. 30, 2020								$ 26,917
Balance, shares at Sep. 30, 2020		189,157							32
Temporary Equity, shares at Jun. 30, 2020								12
Stockholders' Equity, Beginning Balance at Dec. 31, 2020	(211,498)	$ 1,961	1,257,502		2,772	(7,826)	(1,465,907)		$ 0
Temporary Equity, Beginning Balance at Dec. 31, 2020								$ 26,917
Balance, shares at Dec. 31, 2020		196,093							32
Net income (loss)	(54,403)					(726)	(53,677)
Other comprehensive income	(3,774)				(3,774)
Share-based compensation	3,932		3,669			263
Shares sold at the market	60,859	$ 190	60,669
Shares sold at the market, shares		18,950
Payment of CEO payroll in shares	68		68
Payment of CEO payroll in shares, shares		19
Issuance of shares for services	20		20
Issuance of shares for services, shares		5
Conversion of series C-1 convertible preferred stock	4,321	$ 20	4,301					$ (4,321)
Conversion of Series C-1 convertible preferred stock, shares		2,000						(2,000)
Exercise of stock options and employee share purchases	2,526	$ 8	2,518
Exercise of stock options and employee share purchases, shares		796
Stockholders' Equity, Ending Balance at Mar. 31, 2021	(197,949)	$ 2,179	1,328,747		(1,002)	(8,289)	(1,519,584)		$ 0
Temporary Equity, shares at Mar. 31, 2021								10
Temporary Equity, Ending Balance at Mar. 31, 2021								$ 22,596
Balance, shares at Mar. 31, 2021		217,863							32
Temporary Equity, shares at Dec. 31, 2020								12,459
Stockholders' Equity, Beginning Balance at Dec. 31, 2020	(211,498)	$ 1,961	1,257,502		2,772	(7,826)	(1,465,907)		$ 0
Temporary Equity, Beginning Balance at Dec. 31, 2020								$ 26,917
Balance, shares at Dec. 31, 2020		196,093							32
Net income (loss)	38,883
Other comprehensive income	(2,595)
Issuance of subsidiary shares to noncontrolling interest	$ 10,000
Exercise of stock options, shares	2,414,403
Stockholders' Equity, Ending Balance at Sep. 30, 2021	$ 35,553	$ 2,475	1,463,524		177	(6,301)	(1,424,322)		$ 0
Temporary Equity, shares at Sep. 30, 2021								0
Balance, shares at Sep. 30, 2021		247,512							32
Temporary Equity, shares at Dec. 31, 2020								12,459
Stockholders' Equity, Beginning Balance at Mar. 31, 2021	(197,949)	$ 2,179	1,328,747		(1,002)	(8,289)	(1,519,584)		$ 0
Temporary Equity, Beginning Balance at Mar. 31, 2021								$ 22,596
Balance, shares at Mar. 31, 2021		217,863							32
Net income (loss)	(83,991)					(701)	(83,290)
Other comprehensive income	1,262				1,262
Share-based compensation	5,431		5,075			356
Shares sold at the market	9,147	$ 34	9,113
Shares sold at the market, shares		3,392
Issuance of warrants	70		70
Payment of CEO payroll in shares	87		87
Payment of CEO payroll in shares, shares		24
Issuance of shares for services	31		31
Issuance of shares for services, shares		9
Conversion of series C-1 convertible preferred stock	4,321	$ 20	4,301					$ (4,321)
Conversion of Series C-1 convertible preferred stock, shares		2,000						(2)
Exercise of stock options	3,072	$ 10	3,062
Exercise of stock options, shares		1,012
Issuance of shares for 2020 employee bonus	1,275	$ 15	2,757	$ (1,497)
Issuance of shares for 2020 employee bonus, Shares		1,486
Issuance of shares for 2020 employee bonus, Shares				(521)
Retirement of treasury shares	1,492	$ (5)		$ 1,497
Retirement of treasury shares, share		(521)		521
Stockholders' Equity, Ending Balance at Jun. 30, 2021	(255,752)	$ 2,253	1,353,243		260	(8,634)	(1,602,874)		$ 0
Temporary Equity, Ending Balance at Jun. 30, 2021								$ 18,275
Balance, shares at Jun. 30, 2021		225,265							32
Temporary Equity, shares at Mar. 31, 2021								10
Net income (loss)	177,277					(1,275)	178,552
Other comprehensive income	(83)				(83)
Share-based compensation	4,776		4,411			365
Shares sold at the market	77,431	$ 126	77,305
Shares sold at the market, shares		12,674
Issuance of subsidiary shares to noncontrolling interest	10,000		6,757			3,243
Payment of CEO payroll in shares	15		15
Payment of CEO payroll in shares, shares		3
Issuance of shares for services	24		24
Issuance of shares for services, shares		6
Conversion of series C-1 convertible preferred stock	18,275	$ 85	18,190					$ (18,275)
Conversion of Series C-1 convertible preferred stock, shares		8,459						(8)
Exercise of stock options and employee share purchases	3,231	$ 8	3,223
Exercise of stock options and employee share purchases, shares		848
Vesting of nonvested shares		$ 2	(2)
Vesting of nonvested shares, shares		192
Issuance of shares for 2020 employee bonus	202	$ 1	358	$ (157)
Issuance of shares for 2020 employee bonus, Shares		94
Issuance of shares for 2020 employee bonus, Shares				(29)
Retirement of treasury shares	157			$ 157
Retirement of treasury shares, share		(29)		29
Stockholders' Equity, Ending Balance at Sep. 30, 2021	$ 35,553	$ 2,475	$ 1,463,524		$ 177	$ (6,301)	$ (1,424,322)		$ 0
Temporary Equity, shares at Sep. 30, 2021								0
Balance, shares at Sep. 30, 2021		247,512							32