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Fair Value of Financial Instruments - Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Total available-for-sale securities	$ 433,806	$ 213,698
Loans held-for-sale (mandatory pricing agreements)	38,128	24,065
IRLCs
Derivative financial instrument	1,724	582
Forward contracts
Derivative financial instrument		30
Loans held-for-sale (mandatory pricing agreements)
Loans held-for-sale (mandatory pricing agreements)	38,128	24,065
Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	3,013	2,979
Loans held-for-sale (mandatory pricing agreements)	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | IRLCs
Derivative financial instrument	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Forward contracts
Derivative financial instrument	(1,045)	30
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held-for-sale (mandatory pricing agreements)
Loans held-for-sale (mandatory pricing agreements)	0	0
Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	430,793	210,719
Loans held-for-sale (mandatory pricing agreements)	6,375	12,453
Significant Other Observable Inputs (Level 2) | IRLCs
Derivative financial instrument	0	0
Significant Other Observable Inputs (Level 2) | Forward contracts
Derivative financial instrument	0	0
Significant Other Observable Inputs (Level 2) | Loans held-for-sale (mandatory pricing agreements)
Loans held-for-sale (mandatory pricing agreements)	38,128	24,065
Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Loans held-for-sale (mandatory pricing agreements)		0
Significant Unobservable Inputs (Level 3) | IRLCs
Derivative financial instrument	1,724	582
Significant Unobservable Inputs (Level 3) | Forward contracts
Derivative financial instrument	0	0
Significant Unobservable Inputs (Level 3) | Loans held-for-sale (mandatory pricing agreements)
Loans held-for-sale (mandatory pricing agreements)	0	0
U.S. Government-sponsored agencies
Total available-for-sale securities	75,678	37,750
U.S. Government-sponsored agencies | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
U.S. Government-sponsored agencies | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	75,678	37,750
U.S. Government-sponsored agencies | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Municipal securities
Total available-for-sale securities	80,798	21,469
Municipal securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
Municipal securities | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	80,798	21,469
Municipal securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Mortgage-backed securities
Total available-for-sale securities	235,911	113,052
Mortgage-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
Mortgage-backed securities | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities		113,052
Mortgage-backed securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Asset-backed securities
Total available-for-sale securities	19,332	19,361
Asset-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
Asset-backed securities | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities		19,361
Asset-backed securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Corporate securities
Total available-for-sale securities	19,074	19,087
Corporate securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
Corporate securities | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	19,074	19,087
Corporate securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Other securities
Total available-for-sale securities	3,013	2,979
Other securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities		2,979
Other securities | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	0	0
Other securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	$ 0
Forward contracts | Forward contracts
Derivative financial instrument	$ (1,045)

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562

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