Allowance for Loan and Lease Losses - Changes in Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 10,897	$ 11,866	$ 11,708	$ 13,671	$ 13,671
Charge-offs	(594)	(244)	(1,462)	(1,429)	(2,121)
Recoveries	319	22	956	41	1,025
(Credit) provision	(586)	(75)	(1,166)	(714)	(867)
Ending balance	10,036	11,569	10,036	11,569	11,708
Ending balance: related to loans individually evaluated for impairment	114	101	114	101	1,041
Ending balance: related to loans collectively evaluated for impairment	9,922	11,468	9,922	11,468	10,667
LHFI [Abstract]
Ending balance	447,647	377,791	447,647	377,791	415,132
Ending balance: individually evaluated for impairment	11,259	14,911	11,259	14,911	16,078
Ending balance: collectively evaluated for impairment	436,388	362,880	436,388	362,880	399,054
Commercial real estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,885	4,928	4,452	5,498	5,498
Charge-offs	(231)		(231)	(350)	(354)
Recoveries	2		351
(Credit) provision	(448)	43	(364)	(177)	(692)
Ending balance	4,208	4,971	4,208	4,971	4,452
Ending balance: related to loans individually evaluated for impairment					200
Ending balance: related to loans collectively evaluated for impairment	4,208	4,971	4,208	4,971	4,252
LHFI [Abstract]
Ending balance	206,139	154,510	206,139	154,510	175,038
Ending balance: individually evaluated for impairment	4,649	4,510	4,649	4,510	6,795
Ending balance: collectively evaluated for impairment	201,490	150,000	201,490	150,000	168,243
Construction and land development [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,076	2,263	2,292	2,316	2,316
Charge-offs	(80)		(80)		(172)
Recoveries	4		252		940
(Credit) provision	358	(230)	(1,106)	(283)	(792)
Ending balance	1,358	2,033	1,358	2,033	2,292
Ending balance: related to loans individually evaluated for impairment	39		39
Ending balance: related to loans collectively evaluated for impairment	1,319	2,033	1,319	2,033	2,292
LHFI [Abstract]
Ending balance	33,786	41,180	33,786	41,180	45,662
Ending balance: individually evaluated for impairment	545	1,843	545	1,843	683
Ending balance: collectively evaluated for impairment	33,241	39,337	33,241	39,337	44,979
Commercial and industrial [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,035	1,862	1,780	3,006	3,006
Charge-offs	(200)		(541)	(452)	(452)
Recoveries	273	8	274	12	27
(Credit) provision	(403)	(345)	192	(1,041)	(801)
Ending balance	1,705	1,525	1,705	1,525	1,780
Ending balance: related to loans individually evaluated for impairment					301
Ending balance: related to loans collectively evaluated for impairment	1,705	1,525	1,705	1,525	1,479
LHFI [Abstract]
Ending balance	83,825	71,759	83,825	71,759	76,489
Ending balance: individually evaluated for impairment	3,937	6,335	3,937	6,335	5,846
Ending balance: collectively evaluated for impairment	79,888	65,424	79,888	65,424	70,643
Multi-family [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	345	401	285	402	402
(Credit) provision	(45)	15	15	14	(117)
Ending balance	300	416	300	416	285
Ending balance: related to loans collectively evaluated for impairment	300	416	300	416	285
LHFI [Abstract]
Ending balance	16,172	13,336	16,172	13,336	13,823
Ending balance: collectively evaluated for impairment	16,172	13,336	16,172	13,336	13,823
Residential real estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	665	490	616	473	473
Recoveries	3	4	11	6	15
(Credit) provision	(84)	196	(43)	211	128
Ending balance	584	690	584	690	616
Ending balance: related to loans individually evaluated for impairment	28	30	28	30	28
Ending balance: related to loans collectively evaluated for impairment	556	660	556	660	588
LHFI [Abstract]
Ending balance	42,166	40,223	42,166	40,223	42,992
Ending balance: individually evaluated for impairment	935	1,004	935	1,004	959
Ending balance: collectively evaluated for impairment	41,231	39,219	41,231	39,219	42,033
Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,378	1,357	1,429	1,223	1,223
Charge-offs	(75)	(244)	(177)	(362)	(793)
Recoveries	4	9	16	22	42
(Credit) provision	98	230	137	469	957
Ending balance	1,405	1,352	1,405	1,352	1,429
Ending balance: related to loans individually evaluated for impairment	46	71	46	71	80
Ending balance: related to loans collectively evaluated for impairment	1,359	1,281	1,359	1,281	1,349
LHFI [Abstract]
Ending balance	58,090	45,925	58,090	45,925	51,583
Ending balance: individually evaluated for impairment	180	79	180	79	95
Ending balance: collectively evaluated for impairment	57,910	45,846	57,910	45,846	51,488
Tax certificates [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	342	387	667	555	555
Charge-offs	(8)		(433)	(265)	(350)
Recoveries	33	1	52	1	1
(Credit) provision	(50)	20	31	117	461
Ending balance	317	408	317	408	667
Ending balance: related to loans individually evaluated for impairment	1		1		432
Ending balance: related to loans collectively evaluated for impairment	316	408	316	408	235
LHFI [Abstract]
Ending balance	4,804	9,631	4,804	9,631	7,191
Ending balance: individually evaluated for impairment	1,013	1,140	1,013	1,140	1,700
Ending balance: collectively evaluated for impairment	3,791	8,491	3,791	8,491	5,491
Consumer [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	34	17	38	15	15
(Credit) provision	1	7	(3)	9	23
Ending balance	35	24	35	24	38
Ending balance: related to loans collectively evaluated for impairment	35	24	35	24	38
LHFI [Abstract]
Ending balance	2,665	1,227	2,665	1,227	2,354
Ending balance: collectively evaluated for impairment	2,665	1,227	2,665	1,227	2,354
Unallocated [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	137	161	149	183	183
(Credit) provision	(13)	(11)	(25)	(33)	(34)
Ending balance	124	150	124	150	149
Ending balance: related to loans collectively evaluated for impairment	$ 124	$ 150	$ 124	$ 150	$ 149