Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Gains from mortgage banking activities	$ 407,082	$ 439,370	$ 367,185
Servicing fees	200,230	176,352	140,924
Escrow earnings and other interest income	42,985	20,396	9,168
Other	60,918	51,272	34,272
Total revenues	725,246	711,857	575,276
Expenses
Personnel	297,303	289,277	227,491
Amortization and depreciation	142,134	131,246	111,427
Provision (benefit) for credit losses	808	(243)	(612)
Interest expense on corporate debt	10,130	9,745	9,851
Other operating costs	62,021	48,171	41,338
Total expenses	512,396	478,196	389,495
Income from operations	212,850	233,661	185,781
Income tax expense	51,908	21,827	71,470
Net income before noncontrolling interests	160,942	211,834	114,311
Less: net income (loss) from noncontrolling interests	(497)	707	414
Walker and Dunlop net income	161,439	211,127	113,897
Other comprehensive income (loss), net of tax:
Net change in unrealized gains and losses on pledged available-for-sale securities	(168)	(14)	(84)
Walker and Dunlop comprehensive income	$ 161,271	$ 211,113	$ 113,813
Basic earnings per share (NOTE 12)	$ 5.15	$ 6.72	$ 3.66
Diluted earnings per share (NOTE 12)	4.96	$ 6.47	$ 3.57
Cash dividends declared per common share	$ 1.00
Basic weighted average shares outstanding	30,202	30,176	29,768
Diluted weighted average shares outstanding	31,384	31,386	30,537
Loans Held for Sale
Revenues
Net warehouse interest income	$ 5,993	$ 15,077	$ 16,245
Loans Held for Investment
Revenues
Net warehouse interest income	$ 8,038	$ 9,390	$ 7,482