Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues
Investment banking	$ 259,782	$ 183,967	$ 490,305	$ 368,371
Institutional brokerage	91,737	87,838	183,179	184,151
Interest income	6,676	3,729	14,982	12,441
Investment income/(loss)	(17,351)	15,797	(3,183)	26,912
Total revenues	340,844	291,331	685,283	591,875
Interest expense	1,665	2,605	3,048	5,244
Net revenues	339,179	288,726	682,235	586,631
Non-interest expenses
Compensation and benefits	234,709	189,204	457,155	388,598
Outside services	13,974	13,456	26,396	25,582
Occupancy and equipment	16,757	16,020	32,793	31,748
Communications	14,568	13,047	27,797	27,358
Marketing and business development	11,372	10,930	22,135	20,982
Deal-related expenses	5,943	7,505	12,330	13,519
Trade execution and clearance	4,515	4,854	9,381	9,768
Restructuring and integration costs	977	3,903	977	3,903
Intangible asset amortization	2,361	4,904	4,722	9,808
Other operating expenses	5,757	10,522	7,881	15,175
Total non-interest expenses	310,933	274,345	601,567	546,441
Income before income tax expense/(benefit)	28,246	14,381	80,668	40,190
Income tax expense/(benefit)	13,276	(250)	16,120	(7,887)
Net income	14,970	14,631	64,548	48,077
Net income/(loss) attributable to noncontrolling interests	(19,803)	10,677	(12,718)	18,489
Net income attributable to Piper Sandler Companies	$ 34,773	$ 3,954	$ 77,266	$ 29,588
Earnings per common share
Basic	$ 2.19	$ 0.26	$ 4.92	$ 2.00
Diluted	1.97	0.23	4.40	1.73
Dividends declared per common share (in dollars per share)	$ 0.60	$ 0.60	$ 2.20	$ 2.45
Weighted average number of common shares outstanding
Basic (in shares)	15,879	15,066	15,689	14,788
Diluted (in shares)	17,633	17,084	17,569	17,134