Portfolio Loans - Summary of Recorded Investment by Category for Portfolio Loans Restructured (Details) (Non-Covered Loans, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 loan	Dec. 31, 2013 loan
Financing Receivable, Modifications [Line Items]
Number of Loans	8	4
Pre-Modification Outstanding Recorded Balance	$ 5,862	$ 3,193
Post-Modification Outstanding Recorded Balance	5,612	3,193
Commercial & Industrial
Financing Receivable, Modifications [Line Items]
Number of Loans	2	0
Pre-Modification Outstanding Recorded Balance	658	0
Post-Modification Outstanding Recorded Balance	658	0
Commercial Real Estate Owner Occupied
Financing Receivable, Modifications [Line Items]
Number of Loans	3	1
Pre-Modification Outstanding Recorded Balance	1,649	207
Post-Modification Outstanding Recorded Balance	1,399	207
Commercial Real Estate Investor Owned
Financing Receivable, Modifications [Line Items]
Number of Loans	1	1
Pre-Modification Outstanding Recorded Balance	603	678
Post-Modification Outstanding Recorded Balance	603	678
Construction and Land Development
Financing Receivable, Modifications [Line Items]
Number of Loans	1	0
Pre-Modification Outstanding Recorded Balance	2,827	0
Post-Modification Outstanding Recorded Balance	2,827	0
Residential Real Estate
Financing Receivable, Modifications [Line Items]
Number of Loans	1	2
Pre-Modification Outstanding Recorded Balance	125	2,308
Post-Modification Outstanding Recorded Balance	125	2,308
Consumer & Other
Financing Receivable, Modifications [Line Items]
Number of Loans	0	0
Pre-Modification Outstanding Recorded Balance	0	0
Post-Modification Outstanding Recorded Balance	$ 0	$ 0