Securities Securities (Held-to-Maturity Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 37,282	$ 41,563
Gross unrecognized holding gains	377	216
Gross unrecognized holding losses	(101)	(85)
Estimated fair value	37,558	41,694
U.S. Government agency obligations - government-sponsored enterprises
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	1,495	1,490
Gross unrecognized holding gains	1	0
Gross unrecognized holding losses	(11)	(17)
Estimated fair value	1,485	1,473
Municipal obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	16,038	16,088
Gross unrecognized holding gains	332	85
Gross unrecognized holding losses	(5)	(18)
Estimated fair value	16,365	16,155
Asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	0	0
Gross unrecognized holding gains	0	0
Gross unrecognized holding losses	0	0
Estimated fair value	0	0
Collateralized mortgage obligations - government issued
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	11,718	14,505
Gross unrecognized holding gains	32	57
Gross unrecognized holding losses	(41)	(31)
Estimated fair value	11,709	14,531
Collateralized mortgage obligations - government-sponsored enterprises
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	8,031	9,480
Gross unrecognized holding gains	12	74
Gross unrecognized holding losses	(44)	(19)
Estimated fair value	$ 7,999	$ 9,535

Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.6)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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