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Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Loans	Dec. 31, 2014 USD ($) Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 5,623	$ 6,600
Reserves specific to modified loans	1	$ 132
Additional commitments to lend	$ 0
Number of Loans | Loans		2
Pre-Modification Outstanding Recorded Investment		$ 32
Principal Modification		0
Post Modification Outstanding Recorded Investment		32
Outstanding Recorded Investment		$ 29
Defaults on troubled debt restructurings | Loans	0
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 30
Number of Loans | Loans		1
Pre-Modification Outstanding Recorded Investment		$ 25
Principal Modification	0	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 42
Post Modification Outstanding Recorded Investment		25
Outstanding Recorded Investment		25
Financing Receivable, Modifications, Number of Contracts | Loans	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 42
Equity loans and lines of credit
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		4
Principal Modification		0
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 7
Financing Receivable, Modifications, Number of Contracts | Loans		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 7

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-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
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