Loans and Allowance for Credit Losses (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2016	Dec. 31, 2015
Impaired nonaccrual loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	$ 20,029	$ 17,704	$ 20,029	$ 17,704
Recorded investment with no allowance	8,631	8,492	8,631	8,492
Recorded investment with an allowance	4,900	3,601	4,900	3,601
Related allowance	1,039	812	1,039	812
Average recorded investment	11,731	13,444	12,039	13,221
Interest income recognized			0	0
Impaired nonaccrual loans [Member] | Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	11,000	11,850	11,000	11,850
Recorded investment with no allowance	2,562	4,647	2,562	4,647
Recorded investment with an allowance	2,867	2,882	2,867	2,882
Related allowance	739	588	739	588
Average recorded investment	5,489	8,478	6,353	8,169
Interest income recognized			0	0
Impaired nonaccrual loans [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	5,886	2,563	5,886	2,563
Recorded investment with no allowance	4,046	1,773	4,046	1,773
Recorded investment with an allowance	1,579	487	1,579	487
Related allowance	134	208	134	208
Average recorded investment	3,914	2,041	3,103	2,159
Interest income recognized			0	0
Impaired nonaccrual loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	2,832	2,988	2,832	2,988
Recorded investment with no allowance	1,777	1,813	1,777	1,813
Recorded investment with an allowance	409	209	409	209
Related allowance	121	9	121	9
Average recorded investment	2,058	2,707	2,308	2,698
Interest income recognized			0	0
Impaired nonaccrual loans [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	212	175	212	175
Recorded investment with no allowance	147	161	147	161
Recorded investment with an allowance	45	0	45	0
Related allowance	45	0	45	0
Average recorded investment	164	95	161	72
Interest income recognized			0	0
Impaired nonaccrual loans [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	99	128	99	128
Recorded investment with no allowance	99	98	99	98
Recorded investment with an allowance	0	23	0	23
Related allowance	0	7	0	7
Average recorded investment	106	123	114	123
Interest income recognized			0	0
Impaired Accruing TDRs [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	13,337	15,495	13,337	15,495
Recorded investment with no allowance	7,757	7,348	7,757	7,348
Recorded investment with an allowance	5,580	8,147	5,580	8,147
Related allowance	253	589	253	589
Average recorded investment	14,241	17,781	14,657	17,228
Interest income recognized			230	316
Impaired Accruing TDRs [Member] | Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	4,241	4,069	4,241	4,069
Recorded investment with no allowance	3,449	3,266	3,449	3,266
Recorded investment with an allowance	792	803	792	803
Related allowance	25	31	25	31
Average recorded investment	4,244	4,109	4,142	4,064
Interest income recognized			43	40
Impaired Accruing TDRs [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	4,095	5,686	4,095	5,686
Recorded investment with no allowance	2,719	2,380	2,719	2,380
Recorded investment with an allowance	1,376	3,306	1,376	3,306
Related allowance	73	227	73	227
Average recorded investment	4,931	7,393	5,300	6,866
Interest income recognized			102	160
Impaired Accruing TDRs [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	5,001	5,740	5,001	5,740
Recorded investment with no allowance	1,589	1,702	1,589	1,702
Recorded investment with an allowance	3,412	4,038	3,412	4,038
Related allowance	155	331	155	331
Average recorded investment	5,066	6,238	5,215	6,255
Interest income recognized			85	116
Impaired Accruing TDRs [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	0	0	0	0
Recorded investment with no allowance	0	0	0	0
Recorded investment with an allowance	0	0	0	0
Related allowance	0	0	0	0
Average recorded investment	0	41	0	43
Interest income recognized			0	0
Impaired Accruing TDRs [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	0	0	0	0
Recorded investment with no allowance	0	0	0	0
Recorded investment with an allowance	0	0	0	0
Related allowance	0	0	0	0
Average recorded investment	0	0	0	0
Interest income recognized			0	0
Total Impired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	33,366	33,199	33,366	33,199
Recorded investment with no allowance	16,387	15,840	16,387	15,840
Recorded investment with an allowance	10,481	11,748	10,481	11,748
Related allowance	1,292	1,401	1,292	1,401
Average recorded investment	25,972	31,225	26,696	30,449
Interest income recognized			230	316
Total Impired Loans [Member] | Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	15,241	15,919	15,241	15,919
Recorded investment with no allowance	6,011	7,913	6,011	7,913
Recorded investment with an allowance	3,659	3,685	3,659	3,685
Related allowance	764	619	764	619
Average recorded investment	9,733	12,587	10,495	12,233
Interest income recognized			43	40
Total Impired Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	9,980	8,249	9,980	8,249
Recorded investment with no allowance	6,764	4,153	6,764	4,153
Recorded investment with an allowance	2,955	3,793	2,955	3,793
Related allowance	207	435	207	435
Average recorded investment	8,845	9,434	8,403	9,025
Interest income recognized			102	160
Total Impired Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	7,834	8,728	7,834	8,728
Recorded investment with no allowance	3,366	3,515	3,366	3,515
Recorded investment with an allowance	3,822	4,247	3,822	4,247
Related allowance	276	340	276	340
Average recorded investment	7,124	8,945	7,523	8,953
Interest income recognized			85	116
Total Impired Loans [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	212	175	212	175
Recorded investment with no allowance	147	161	147	161
Recorded investment with an allowance	45	0	45	0
Related allowance	45	0	45	0
Average recorded investment	164	136	161	115
Interest income recognized			0	0
Total Impired Loans [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	99	128	99	128
Recorded investment with no allowance	99	98	99	98
Recorded investment with an allowance	0	23	0	23
Related allowance	0	7	0	7
Average recorded investment	$ 106	$ 123	114	123
Interest income recognized			$ 0	$ 0