Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues
Total revenues	$ 1,234,306,000	$ 1,132,490,000	$ 1,054,440,000
Expenses
Personnel	647,809,000	559,246,000	514,290,000
Amortization and depreciation	238,682,000	237,549,000	226,752,000
Provision (benefit) for credit losses	9,586,000	10,839,000	(10,452,000)
Interest expense on corporate debt	64,715,000	69,686,000	68,476,000
Goodwill impairment	0	33,000,000	62,000,000
Fair value adjustments to contingent consideration liabilities	(8,243,000)	(50,321,000)	(62,500,000)
Indemnified and repurchased loan expenses (NOTE 5)	40,850,000	10,573,000
Asset impairments and other expenses (NOTE 17)	36,746,000	1,181,000	(607,000)
Other operating expenses	125,163,000	129,236,000	118,284,000
Total expenses	1,155,308,000	1,000,989,000	916,243,000
Income before taxes	78,998,000	131,501,000	138,197,000
Income tax expense	22,013,000	30,543,000	35,026,000
Net income before noncontrolling interests and temporary equity holders	56,985,000	100,958,000	103,171,000
Less: net income (loss) from noncontrolling interests	(99,000)	(7,209,000)	(4,186,000)
Less: net income (loss) attributable to temporary equity holders	837,000
Walker & Dunlop net income	56,247,000	108,167,000	107,357,000
Other comprehensive income (loss), net of tax	1,290,000	1,065,000	1,089,000
Walker & Dunlop comprehensive income	$ 57,537,000	$ 109,232,000	$ 108,446,000
Basic earnings per share (NOTE 11)	$ 1.65	$ 3.19	$ 3.2
Diluted earnings per share (NOTE 11)	$ 1.64	$ 3.19	$ 3.18
Basic weighted-average shares outstanding	33,347	33,116	32,697
Diluted weighted-average shares outstanding	33,369	33,158	32,875
Loan origination and debt brokerage fees, net
Revenues
Total revenues	$ 342,149,000	$ 276,562,000	$ 234,409,000
Fair value of expected net cash flows from servicing, net of guaranty obligation
Revenues
Total revenues	179,681,000	153,593,000	141,917,000
Servicing fees
Revenues
Total revenues	337,442,000	325,644,000	311,914,000
Property sales broker fees
Revenues
Total revenues	83,519,000	60,583,000	53,966,000
Investment management fees
Revenues
Total revenues	34,629,000	36,976,000	45,381,000
Net warehouse interest income (expense)
Revenues
Total revenues	(5,490,000)	(7,033,000)	(5,633,000)
Placement fees and other interest income
Revenues
Total revenues	152,584,000	167,961,000	154,520,000
Other revenues
Revenues
Total revenues	$ 109,792,000	$ 118,204,000	$ 117,966,000