CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	$ 488,105	$ 278,500
Operating costs and expenses
Costs of revenue	332,145	190,873
Advertising and promotions	190,476	56,517
General administration and other	55,518	162,447
Depreciation and amortization	4,245	2,082
Total operating costs and expenses	582,384	411,919
Loss from operations	(94,279)	(133,419)
Other income (expenses)
Interest expense, net	(187)	(135)
Change in fair value of warrant liability	41,802	7,166
Change in fair value of earnout interests liability	(13,740)	(2,338)
Total other income	27,875	4,693
Loss before income taxes	(66,404)	(128,726)
Income tax expense	4,688	2,919
Net loss	(71,092)	(131,645)
Net loss attributable to non-controlling interests	(51,603)	(132,726)
Net income (loss) attributable to Rush Street Interactive, Inc.	$ (19,489)	$ 1,081
Net loss per common share attributable to Rush Street Interactive, Inc. - basic (in USD per share)	$ (0.35)	$ 0.02
Weighted average common shares outstanding - basic (in shares)	56,265,541	43,579,704
Net loss per common share attributable to Rush Street Interactive, Inc. - diluted (in USD per share)	$ (0.51)	$ (0.01)
Weighted average common shares outstanding - diluted (in shares)	57,426,885	52,242,606
COMPREHENSIVE INCOME (LOSS)
Net loss	$ (71,092)	$ (131,645)
Other comprehensive income (loss)
Foreign currency translation adjustment	(2,111)	524
Comprehensive loss	(73,203)	(131,121)
Comprehensive loss attributable to non-controlling interests	(53,168)	(132,202)
Comprehensive income (loss) attributable to Rush Street Interactive, Inc.	$ (20,035)	$ 1,081