Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues
Loan origination and debt brokerage fees, net	$ 446,014	$ 359,061	$ 258,471
Fair value of expected net cash flows from servicing, net	287,145	358,000	180,766
Servicing fees	278,466	235,801	214,550
Property sales broker fees.	119,981	38,108	30,917
Escrow earnings and other interest income	8,150	18,255	56,835
Other revenues	97,314	45,156	49,981
Total revenues	1,259,178	1,083,707	817,219
Expenses
Personnel	603,487	468,819	346,168
Amortization and depreciation	210,284	169,011	152,472
Provision (benefit) for credit losses	(13,287)	37,479	7,273
Interest expense on corporate debt	7,981	8,550	14,359
Other operating expenses	98,655	69,582	66,596
Total expenses	907,120	753,441	586,868
Income from operations	352,058	330,266	230,351
Income tax expense	86,428	84,313	57,121
Net income before noncontrolling interests	265,630	245,953	173,230
Less: net income (loss) from noncontrolling interests	(132)	(224)	(143)
Walker and Dunlop net income	265,762	246,177	173,373
Net change in unrealized gains (losses) on pledged available-for-sale securities, net of taxes	590	1,231	812
Walker and Dunlop comprehensive income	$ 266,352	$ 247,408	$ 174,185
Basic earnings per share (NOTE 12)	$ 8.27	$ 7.85	$ 5.61
Diluted earnings per share (NOTE 12)	$ 8.15	$ 7.69	$ 5.45
Basic weighted average shares outstanding	31,081	30,444	29,913
Diluted weighted average shares outstanding	31,533	31,083	30,815
Loans Held for Sale
Revenues
Net warehouse interest income	$ 14,396	$ 17,936	$ 1,917
Loans Held for Investment
Revenues
Net warehouse interest income	$ 7,712	$ 11,390	$ 23,782