Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues
Total revenues	$ 272,615		$ 340,848		$ 511,361	$ 660,292
Expenses
Personnel	133,305		168,368		251,918	312,549
Amortization and depreciation	56,292		61,103		113,258	117,255
Provision (benefit) for credit losses	(734)		(4,840)		(11,509)	(14,338)
Interest expense on corporate debt	17,010		6,412		32,284	12,817
Other operating expenses	30,730		36,195		54,793	68,409
Total expenses	236,603		267,238		440,744	496,692
Income from operations	36,012		73,610		70,617	163,600
Income tax expense	10,491		19,503		17,626	38,963
Net income before noncontrolling interests	25,521		54,107		52,991	124,637
Net income (loss) from noncontrolling interests	(2,114)	$ 805	(179)	$ (679)	(1,309)	(858)
Walker & Dunlop net income	27,635	$ 26,665	54,286	$ 71,209	54,300	125,495
Net change in unrealized gains (losses) on pledged available-for-sale securities, net of taxes	156		(1,810)		103	(2,780)
Walker & Dunlop comprehensive income	$ 27,791		$ 52,476		$ 54,403	$ 122,715
Basic earnings per share (NOTE 10)	$ 0.82		$ 1.63		$ 1.62	$ 3.77
Diluted earnings per share (NOTE 10)	$ 0.82		$ 1.61		$ 1.61	$ 3.73
Basic weighted-average shares outstanding	32,695		32,388		32,612	32,304
Diluted weighted-average shares outstanding	32,851		32,694		32,834	32,657
Loan origination and debt brokerage fees, Net
Revenues
Total revenues	$ 64,968		$ 102,605		$ 112,052	$ 184,915
Fair value of expected net cash flows from servicing, net
Revenues
Total revenues	42,058		51,949		72,071	104,679
Servicing fees
Revenues
Total revenues	77,061		74,260		152,827	146,941
Property sales broker fees
Revenues
Total revenues	10,345		46,386		21,969	69,784
Investment management fees
Revenues
Total revenues	16,309		16,186		31,482	31,044
Net warehouse interest income
Revenues
Total revenues	(1,526)		5,268		(1,525)	10,041
Escrow earnings and other interest income
Revenues
Total revenues	35,386		6,751		66,310	8,554
Other revenue
Revenues
Total revenues	$ 28,014		$ 37,443		$ 56,175	$ 104,334