v3.8.0.1

Securities - Summary of AFS Securities Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	$ 475,889	$ 518,491
Gross Unrealized gains	2,253	871
Gross Unrealized losses	(6,640)	(9,784)
Estimated Fair Value	471,502	509,578
U.S. Treasury Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	499	300
Gross Unrealized losses	(4)	(3)
Estimated Fair Value	495	297
Agency Mortgage-backed Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	436,415	476,163
Gross Unrealized gains	497	160
Gross Unrealized losses	(4,464)	(7,414)
Estimated Fair Value	432,448	468,909
Beneficial interests in FHLMC securitization
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	38,975	42,028
Gross Unrealized gains	1,756	711
Gross Unrealized losses	(2,172)	(2,367)
Estimated Fair Value	$ 38,559	$ 40,372

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

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-Publisher FASB
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
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