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Mortgage Banking Activities (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]
Loans originated for sale	$ 104,100	$ 107,800	$ 282,527	$ 302,887
Proceeds from sale of loans	102,800	118,300	287,556	317,170
Portfolio mortgage loans sold to an investor, gross			25,200
Net proceeds from sale of portfolio loans			25,717	26,679
Gain on sale of portfolio mortgage loans			400
Gain on loans sold	1,622	2,453	4,787	5,876
(Loss) gain resulting from the change in fair value of loans held-for-sale	(168)	(6)	(250)	519
Gain (loss) resulting from the change in fair value of derivatives	(52)	88	40	(89)
Mortgage banking activities	$ 1,402	$ 2,535	$ 4,577	$ 6,306

X

- Definition

Gain (Loss) on Sale of Loans Held For Investment

+ References

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- Definition

Proceeds from Sale of Loans Held-for-investment, Gross

+ References

No definition available.

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
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- Definition

The noninterest income derived from mortgage banking activities (fees and commissions), excluding fees earned from servicing third-party assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13 (d))
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- Definition

The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans and leases that were sold during the reporting period. This element refers to the gain (loss) and not to the cash proceeds of the sales. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The increase (decrease) during the reporting period in the value of loans or securitized loans that are held with the intention to sell in the near future.

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- Definition

The aggregate amount of cash outflow for loans purchased and created with the intention to resell them in the near future.

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- Definition

The cash inflow from Sales of Loans Held For Investment.

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- Definition

The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

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