Gains from Mortgage Banking Activities/Originations, Net - Summary of Gains from Mortgage Banking Activities/Originations, Net (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Mortgage Banking [Abstract]
Loan origination related fees and sales premiums, net	$ 23,288	$ 19,772	$ 58,287	$ 66,673
Fair value of expected net future cash flows from servicing recognized at commitment, net	28,684	25,683	74,477	97,590
Gains from mortgage banking activities/originations, net	$ 51,972	$ 45,455	$ 132,764	$ 164,263

The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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Period Type:	duration