Loans, Impaired Financing Receivables (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Impaired loans [Abstract]
TDR		$ 2,368		$ 2,518
Non - TDR		168		203
TDR allowances based on collateral		4,683		4,810
TDR - allowances based on present value cash flow		80,009		81,002
Non - TDR - allowance based on collateral		623		260
Non - TDR - allowance based on present value cash flow		0		0
Total impaired loans		87,851		88,793
Amount of allowance for loan losses allocated [Abstract]
TDR - allowance based on collateral		2,531		2,436
TDR - allowance based on present value cash flow		8,135		8,471
Non - TDR - allowance based on collateral		184		76
Non - TDR - allowance based on present value cash flow		0		0
Allowance for loan losses allocated		10,850		10,983
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	2,555		2,727
Unpaid Principal Balance, with no related allowance	[1]	3,586		3,744
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	85,599		86,404
Unpaid Principal Balance, with an allowance recorded	[1]	88,955		90,182
Recorded Investment	[1]	88,154		89,131
Unpaid Principal Balance	[1]	92,541		93,926
Related Allowance	[1]	10,850		10,983
Accrued interest included in recorded investment	[1]	303		338
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	2,643	$ 9,701
Interest Income Recognized, with No Related Allowance	[2]	32	124
Average Recorded Investment, with Related Allowance	[2]	86,004	101,674
Interest Income Recognized, with Related Allowance	[2]	903	1,074
Average Recorded Investment	[2]	88,647	111,375
Interest Income Recognized	[2]	935	1,198
Commercial [Member] | Income Producing - Real Estate [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	785		641
Unpaid Principal Balance, with no related allowance	[1]	1,030		851
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	8,234		8,377
Unpaid Principal Balance, with an allowance recorded	[1]	9,061		9,232
Recorded Investment	[1]	9,019		9,018
Unpaid Principal Balance	[1]	10,091		10,083
Related Allowance	[1]	548		516
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	713	5,848
Interest Income Recognized, with No Related Allowance	[2]	2	53
Average Recorded Investment, with Related Allowance	[2]	8,306	12,849
Interest Income Recognized, with Related Allowance	[2]	107	157
Average Recorded Investment	[2]	9,019	18,697
Interest Income Recognized	[2]	109	210
Commercial [Member] | Land, Land Development and Construction - Real Estate [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	537		818
Unpaid Principal Balance, with no related allowance	[1]	1,112		1,393
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	1,484		1,690
Unpaid Principal Balance, with an allowance recorded	[1]	1,484		1,778
Recorded Investment	[1]	2,021		2,508
Unpaid Principal Balance	[1]	2,596		3,171
Related Allowance	[1]	95		296
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	678	1,041
Interest Income Recognized, with No Related Allowance	[2]	7	34
Average Recorded Investment, with Related Allowance	[2]	1,587	2,709
Interest Income Recognized, with Related Allowance	[2]	13	14
Average Recorded Investment	[2]	2,265	3,750
Interest Income Recognized	[2]	20	48
Commercial [Member] | Commercial and Industrial [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	1,218		1,245
Unpaid Principal Balance, with no related allowance	[1]	1,216		1,241
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	5,327		4,097
Unpaid Principal Balance, with an allowance recorded	[1]	5,592		4,439
Recorded Investment	[1]	6,545		5,342
Unpaid Principal Balance	[1]	6,808		5,680
Related Allowance	[1]	2,148		1,896
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	1,232	2,768
Interest Income Recognized, with No Related Allowance	[2]	21	37
Average Recorded Investment, with Related Allowance	[2]	4,712	8,177
Interest Income Recognized, with Related Allowance	[2]	23	66
Average Recorded Investment	[2]	5,944	10,945
Interest Income Recognized	[2]	44	103
Mortgage [Member] | 1-4 Family [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	0		23
Unpaid Principal Balance, with no related allowance	[1]	140		183
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	46,608		47,792
Unpaid Principal Balance, with an allowance recorded	[1]	48,532		49,808
Recorded Investment	[1]	46,608		47,815
Unpaid Principal Balance	[1]	48,672		49,991
Related Allowance	[1]	4,976		5,132
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	12	13
Interest Income Recognized, with No Related Allowance	[2]	1	0
Average Recorded Investment, with Related Allowance	[2]	47,200	52,451
Interest Income Recognized, with Related Allowance	[2]	502	551
Average Recorded Investment	[2]	47,212	52,464
Interest Income Recognized	[2]	503	551
Mortgage [Member] | Resort Lending [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	0		0
Unpaid Principal Balance, with no related allowance	[1]	0		0
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	17,929		18,148
Unpaid Principal Balance, with an allowance recorded	[1]	17,963		18,319
Recorded Investment	[1]	17,929		18,148
Unpaid Principal Balance	[1]	17,963		18,319
Related Allowance	[1]	2,654		2,662
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	0	31
Interest Income Recognized, with No Related Allowance	[2]	0	0
Average Recorded Investment, with Related Allowance	[2]	18,039	18,632
Interest Income Recognized, with Related Allowance	[2]	160	171
Average Recorded Investment	[2]	18,039	18,663
Interest Income Recognized	[2]	160	171
Mortgage [Member] | Home Equity - 1st Lien [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	0		0
Unpaid Principal Balance, with no related allowance	[1]	0		0
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	243		168
Unpaid Principal Balance, with an allowance recorded	[1]	247		172
Recorded Investment	[1]	243		168
Unpaid Principal Balance	[1]	247		172
Related Allowance	[1]	12		9
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	0	0
Interest Income Recognized, with No Related Allowance	[2]	0	0
Average Recorded Investment, with Related Allowance	[2]	206	162
Interest Income Recognized, with Related Allowance	[2]	2	2
Average Recorded Investment	[2]	206	162
Interest Income Recognized	[2]	2	2
Mortgage [Member] | Home Equity - 2nd Lien [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	0		0
Unpaid Principal Balance, with no related allowance	[1]	0		0
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	119		244
Unpaid Principal Balance, with an allowance recorded	[1]	201		325
Recorded Investment	[1]	119		244
Unpaid Principal Balance	[1]	201		325
Related Allowance	[1]	9		15
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	0	0
Interest Income Recognized, with No Related Allowance	[2]	0	0
Average Recorded Investment, with Related Allowance	[2]	182	123
Interest Income Recognized, with Related Allowance	[2]	1	2
Average Recorded Investment	[2]	182	123
Interest Income Recognized	[2]	1	2
Installment [Member] | Home Equity - 1st Lien [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	1		0
Unpaid Principal Balance, with no related allowance	[1]	75		76
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	2,287		2,364
Unpaid Principal Balance, with an allowance recorded	[1]	2,421		2,492
Recorded Investment	[1]	2,288		2,364
Unpaid Principal Balance	[1]	2,496		2,568
Related Allowance	[1]	130		143
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	1	0
Interest Income Recognized, with No Related Allowance	[2]	1	0
Average Recorded Investment, with Related Allowance	[2]	2,326	2,691
Interest Income Recognized, with Related Allowance	[2]	42	50
Average Recorded Investment	[2]	2,327	2,691
Interest Income Recognized	[2]	43	50
Installment [Member] | Home Equity - 2nd Lien [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	14		0
Unpaid Principal Balance, with no related allowance	[1]	13		0
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	2,793		2,929
Unpaid Principal Balance, with an allowance recorded	[1]	2,807		2,951
Recorded Investment	[1]	2,807		2,929
Unpaid Principal Balance	[1]	2,820		2,951
Related Allowance	[1]	239		271
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	7	0
Interest Income Recognized, with No Related Allowance	[2]	0	0
Average Recorded Investment, with Related Allowance	[2]	2,861	3,174
Interest Income Recognized, with Related Allowance	[2]	44	51
Average Recorded Investment	[2]	2,868	3,174
Interest Income Recognized	[2]	44	51
Installment [Member] | Loans Not Secured By Real Estate [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	0		0
Unpaid Principal Balance, with no related allowance	[1]	0		0
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	569		587
Unpaid Principal Balance, with an allowance recorded	[1]	641		658
Recorded Investment	[1]	569		587
Unpaid Principal Balance	[1]	641		658
Related Allowance	[1]	38		42
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	0	0
Interest Income Recognized, with No Related Allowance	[2]	0	0
Average Recorded Investment, with Related Allowance	[2]	578	694
Interest Income Recognized, with Related Allowance	[2]	9	10
Average Recorded Investment	[2]	578	694
Interest Income Recognized	[2]	9	10
Installment [Member] | Other [Member]
Impaired Loans by class [Abstract]
Recorded Investment, with no related allowance	[1]	0		0
Unpaid Principal Balance, with no related allowance	[1]	0		0
No Related Allowance	[1]	0		0
Recorded Investment, with an allowance recorded	[1]	6		8
Unpaid Principal Balance, with an allowance recorded	[1]	6		8
Recorded Investment	[1]	6		8
Unpaid Principal Balance	[1]	6		8
Related Allowance	[1]	1		$ 1
Average recorded investment in and interest income earned on impaired loans by class [Abstract]
Average Recorded Investment, with No Related Allowance	[2]	0	0
Interest Income Recognized, with No Related Allowance	[2]	0	0
Average Recorded Investment, with Related Allowance	[2]	7	12
Interest Income Recognized, with Related Allowance	[2]	0	0
Average Recorded Investment	[2]	7	12
Interest Income Recognized	[2]	$ 0	$ 0

[1] (1) There were no impaired payment plan receivables or purchased mortgage loans at March 31, 2016 or December 31, 2015.

[2] (1) There were no impaired payment plan receivables or purchased mortgage loans during the three month periods ended March 31, 2016 and 2015, respectively.