Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues
Gains from mortgage banking activities	$ 439,370	$ 367,185	$ 290,466
Servicing fees	176,352	140,924	114,757
Escrow earnings and other interest income	20,396	9,168	4,473
Other	51,272	34,272	34,542
Total revenues	711,857	575,276	468,198
Expenses
Personnel	289,277	227,491	184,590
Amortization and depreciation	131,246	111,427	98,173
Provision (benefit) for credit losses	(243)	(612)	1,644
Interest expense on corporate debt	9,745	9,851	9,918
Other operating costs	48,171	41,338	38,507
Total expenses	478,196	389,495	332,832
Income from operations	233,661	185,781	135,366
Income tax expense	21,827	71,470	52,771
Net income before noncontrolling interests	211,834	114,311	82,595
Less: net income from noncontrolling interests	707	414	467
Walker and Dunlop net income	$ 211,127	$ 113,897	$ 82,128
Basic earnings per share	$ 7.03	$ 3.87	$ 2.76
Diluted earnings per share	$ 6.56	$ 3.65	$ 2.65
Basic weighted average shares outstanding	30,014	29,432	29,754
Diluted weighted average shares outstanding	32,205	31,172	30,949
Loans Held for Sale
Revenues
Net warehouse interest income	$ 15,077	$ 16,245	$ 14,541
Loans Held for Investment
Revenues
Net warehouse interest income	$ 9,390	$ 7,482	$ 9,419