Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues
Gains from mortgage banking activities	$ 186,543	$ 102,712	$ 85,203
Servicing fees	52,207	33,581	27,024
Net warehouse interest income	4,668	4,198	3,586
Escrow earnings and other interest income	2,965	1,474	2,056
Other	10,387	10,385	3,965
Total revenues	256,770	152,350	121,834
Expenses
Personnel	109,037	51,162	42,459
Amortization and depreciation	38,673	22,444	16,827
Amortization of intangible assets	15,252	70	132
Provision for risk-sharing obligations	3,140	4,724	7,469
Interest expense on corporate debt	1,649	823	1,334
Other operating expenses	33,249	16,466	13,471
Total expenses	201,000	95,689	81,692
Income from operations before income taxes	55,770	56,661	40,142
Income tax expense	21,998	21,797	31,915
Net income	33,772	34,864	8,227
Basic earnings per share (in dollars per share)	$ 1.32	$ 1.61	$ 0.55
Diluted earnings per share (in dollars per share)	$ 1.31	$ 1.60	$ 0.55
Basic weighted average shares outstanding (in shares)	25,545,028	21,621,534	15,033,741
Diluted weighted average shares outstanding (in shares)	25,845,015	21,747,672	15,036,411
Pro forma net income data (unaudited)
Income from operations, as reported			40,142
Pro forma adjustments for income tax expense			15,535
Pro forma net income			$ 24,607
Pro forma basic earnings per share (in dollars per share)			$ 1.64
Pro forma diluted earnings per share (in dollars per share)			$ 1.64