Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Loan origination and debt brokerage fees, net	$ 258,471	$ 234,681	$ 245,484
Fair value of expected net cash flows from servicing, net	180,766	172,401	193,886
Servicing fees	214,550	200,230	176,352
Escrow earnings and other interest income	56,835	42,985	20,396
Other revenues	80,898	60,918	51,272
Total revenues	817,219	725,246	711,857
Expenses
Personnel	346,168	297,303	289,277
Amortization and depreciation	152,472	142,134	131,246
Provision (benefit) for credit losses	7,273	808	(243)
Interest expense on corporate debt	14,359	10,130	9,745
Other operating costs	66,596	62,021	48,171
Total expenses	586,868	512,396	478,196
Income from operations	230,351	212,850	233,661
Income tax expense	57,121	51,908	21,827
Net income before noncontrolling interests	173,230	160,942	211,834
Less: net income (loss) from noncontrolling interests	(143)	(497)	707
Walker and Dunlop net income	173,373	161,439	211,127
Other comprehensive income (loss), net of tax:
Net change in unrealized gains and losses on pledged available-for-sale securities	812	(168)	(14)
Walker and Dunlop comprehensive income	$ 174,185	$ 161,271	$ 211,113
Basic earnings per share (NOTE 11)	$ 5.61	$ 5.15	$ 6.72
Diluted earnings per share (NOTE 11)	$ 5.45	$ 4.96	$ 6.47
Basic weighted average shares outstanding	29,913	30,202	30,176
Diluted weighted average shares outstanding	30,815	31,384	31,386
Loans Held for Sale
Revenues
Net warehouse interest income	$ 1,917	$ 5,993	$ 15,077
Loans Held for Investment
Revenues
Net warehouse interest income	$ 23,782	$ 8,038	$ 9,390