Loans, Troubled Debt Restructurings (Details) $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2016 USD ($) Contract		Sep. 30, 2015 USD ($) Contract		Sep. 30, 2016 USD ($) Payments Contract		Sep. 30, 2015 USD ($) Contract		Dec. 31, 2015 USD ($)
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring		$ 80,714				$ 80,714				$ 88,330
Troubled debt restructuring, specific reserve		$ 10,100				$ 10,100				10,900
Number of Consecutive Timely Payments Required | Payments						6
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		12	[1]	5	[1]	32	[2]	26	[2]
Pre-modification recorded balance		$ 759	[1]	$ 410	[1]	$ 3,239	[2]	$ 2,483	[2]
Post-modification recorded balance		749	[1]	389	[1]	3,276	[2]	2,252	[2]
Increase (decrease) in allowance for loan losses		340		(50)		690		50
Charge offs due to troubled debt restructurings		$ 20		$ 0		$ 20		$ 0
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		1		0		4
Recorded balance		$ 0		$ 54		$ 0		$ 215
Past due period for modified loans						90 days
Increase (decrease) in allowance for loan loss due to TDRs that subsequently defaulted		0		(100)		$ 0		0
Charge-offs on TDRs that subsequently defaulted				$ 0				$ 0
Minimum [Member]
Financing Receivable, Modifications [Line Items]
Modification of stated interest rate of loans, range of period						9 months
Modifications involving extension of maturity date, period range						1 month
Maximum [Member]
Financing Receivable, Modifications [Line Items]
Modification of stated interest rate of loans, range of period						36 months
Modification of stated interest rate of loans, range of period in certain circumstances						480 months
Modifications involving extension of maturity date, period range						60 months
Modifications involving extension of maturity date, period range in certain circumstances						230 months
Performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring		74,941				$ 74,941				81,512
Non-performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring	[3]	5,773				5,773				6,818
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring		14,994				14,994				16,359
Commercial [Member] | Performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring		12,642				12,642				13,318
Commercial [Member] | Non-performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring	[3]	$ 2,352				$ 2,352				3,041
Commercial [Member] | Income Producing - Real Estate [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		2	[1]	0	[1]	4	[2]	2	[2]
Pre-modification recorded balance		$ 180	[1]	$ 0	[1]	$ 290	[2]	$ 229	[2]
Post-modification recorded balance		$ 180	[1]	$ 0	[1]	$ 290	[2]	$ 234	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		0
Recorded balance		$ 0		$ 0		$ 0		$ 0
Commercial [Member] | Land, Land Development and Construction - Real Estate [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		0	[1]	0	[1]	0	[2]	0	[2]
Pre-modification recorded balance		$ 0	[1]	$ 0	[1]	$ 0	[2]	$ 0	[2]
Post-modification recorded balance		$ 0	[1]	$ 0	[1]	$ 0	[2]	$ 0	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		0
Recorded balance		$ 0		$ 0		$ 0		$ 0
Commercial [Member] | Commercial and Industrial [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		2	[1]	1	[1]	6	[2]	4	[2]
Pre-modification recorded balance		$ 175	[1]	$ 48	[1]	$ 1,933	[2]	$ 301	[2]
Post-modification recorded balance		$ 158	[1]	$ 26	[1]	$ 1,916	[2]	$ 273	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		2
Recorded balance		$ 0		$ 0		$ 0		$ 157
Mortgage [Member] | 1-4 Family [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		2	[1]	3	[1]	5	[2]	9	[2]
Pre-modification recorded balance		$ 204	[1]	$ 343	[1]	$ 396	[2]	$ 1,373	[2]
Post-modification recorded balance		$ 207	[1]	$ 344	[1]	$ 470	[2]	$ 1,189	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		1		0		1
Recorded balance		$ 0		$ 54		$ 0		$ 54
Mortgage [Member] | Resort Lending [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		0	[1]	0	[1]	1	[2]	1	[2]
Pre-modification recorded balance		$ 0	[1]	$ 0	[1]	$ 116	[2]	$ 313	[2]
Post-modification recorded balance		$ 0	[1]	$ 0	[1]	$ 117	[2]	$ 309	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		0
Recorded balance		$ 0		$ 0		$ 0		$ 0
Mortgage [Member] | Home Equity - 1st Lien [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		0	[1]	0	[1]	1	[2]	0	[2]
Pre-modification recorded balance		$ 0	[1]	$ 0	[1]	$ 107	[2]	$ 0	[2]
Post-modification recorded balance		$ 0	[1]	$ 0	[1]	$ 78	[2]	$ 0	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		0
Recorded balance		$ 0		$ 0		$ 0		$ 0
Mortgage [Member] | Home Equity - 2nd Lien [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		2	[1]	0	[1]	2	[2]	0	[2]
Pre-modification recorded balance		$ 77	[1]	$ 0	[1]	$ 77	[2]	$ 0	[2]
Post-modification recorded balance		$ 78	[1]	$ 0	[1]	$ 78	[2]	$ 0	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		0
Recorded balance		$ 0		$ 0		$ 0		$ 0
Installment [Member] | Home Equity - 1st Lien [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		2	[1]	0	[1]	6	[2]	5	[2]
Pre-modification recorded balance		$ 82	[1]	$ 0	[1]	$ 141	[2]	$ 190	[2]
Post-modification recorded balance		$ 85	[1]	$ 0	[1]	$ 145	[2]	$ 164	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		0
Recorded balance		$ 0		$ 0		$ 0		$ 0
Installment [Member] | Home Equity - 2nd Lien [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		1	[1]	0	[1]	5	[2]	3	[2]
Pre-modification recorded balance		$ 7	[1]	$ 0	[1]	$ 133	[2]	$ 58	[2]
Post-modification recorded balance		$ 7	[1]	$ 0	[1]	$ 136	[2]	$ 58	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		0
Recorded balance		$ 0		$ 0		$ 0		$ 0
Installment [Member] | Loans Not Secured by Real Estate [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		1	[1]	1	[1]	2	[2]	2	[2]
Pre-modification recorded balance		$ 34	[1]	$ 19	[1]	$ 46	[2]	$ 19	[2]
Post-modification recorded balance		$ 34	[1]	$ 19	[1]	$ 46	[2]	$ 25	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		1
Recorded balance		$ 0		$ 0		$ 0		$ 4
Installment [Member] | Other [Member]
Loans classified as troubled debt restructurings [Abstract]
Number of contracts | Contract		0	[1]	0	[1]	0	[2]	0	[2]
Pre-modification recorded balance		$ 0	[1]	$ 0	[1]	$ 0	[2]	$ 0	[2]
Post-modification recorded balance		$ 0	[1]	$ 0	[1]	$ 0	[2]	$ 0	[2]
TDR that subsequently defaulted [Abstract]
Number of contracts | Contract		0		0		0		0
Recorded balance		$ 0		$ 0		$ 0		$ 0
Retail [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring		65,720				65,720				71,971
Retail [Member] | Performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring		62,299				62,299				68,194
Retail [Member] | Non-performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring	[3],[4]	$ 3,421				$ 3,421				$ 3,777

[1] There were no payment plan receivables or purchased mortgage loans classified as troubled debt restructurings during the three month periods ended September 30, 2016 and 2015, respectively.

[2] There were no payment plan receivables or purchased mortgage loans classified as troubled debt restructurings during the nine month periods ended September 30, 2016 and 2015, respectively.

[3] Included in non-performing loans table above.

[4] Also includes loans on non-accrual at the time of modification until six payments are received on a timely basis.