v3.26.1
Earnings Per Share - Schedule of Basic and Diluted Loss per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Numerator:            
Net income $ 29,295 $ 26,211 $ 28,830 $ 11,211 $ 55,506 $ 40,041
Net income attributable to non-controlling interests 17,749   12,142   34,890 18,034
Net income attributable to Rush Street Interactive, Inc. – basic 11,546   16,688   20,616 22,007
Increase to net income attributable to non-controlling interests 0   12,142   0 18,034
Net income attributable to Rush Street Interactive, Inc. – diluted $ 11,546   $ 28,830   $ 20,616 $ 40,041
Denominator:            
Weighted average common shares outstanding - basic (in shares) 110,930,443   95,053,473   106,581,990 94,455,413
Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract]            
Incremental shares from assumed conversion of stock options and restricted stock units (in shares) 4,996,726   6,163,100   4,577,320 6,272,617
Conversion of weighted average RSILP units to class A common shares (in shares) 0   133,294,736   0 133,677,803
Weighted average common shares outstanding - diluted (in shares) 115,927,169   234,511,309   111,159,310 234,405,833
Earnings per class A common share - basic (in USD per share) $ 0.10   $ 0.18   $ 0.19 $ 0.23
Earnings per class A common share - diluted (in USD per share) $ 0.10   $ 0.12   $ 0.19 $ 0.17