Loans and Allowance for Loan Losses - Summary of Current and Past Due Loans Held For Investment (Accruing And Non-Accruing) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable Recorded Investment Past Due [Line Items]
Current	$ 1,092,473	$ 1,028,692
30-89 Days Past Due	2,282	15,749
90+ Days Past Due	15	3
Non-accrual	5,368	7,415
Total Past-Due	7,665	23,167
Total loans	1,100,138	1,051,859
Real Estate Term
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	592,253	577,804
Construction and Land Development
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	212,937	179,664
Residential and Home Equity
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	71,768	71,169
Consumer and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	14,617	14,945
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Current	799,809	738,381
30-89 Days Past Due	1,325	13,588
Non-accrual	4,056	5,499
Total Past-Due	5,381	19,087
Total loans	805,190	757,468
Commercial Real Estate | Real Estate Term
Financing Receivable Recorded Investment Past Due [Line Items]
Current	588,384	567,886
30-89 Days Past Due	886	5,804
Non-accrual	2,983	4,114
Total Past-Due	3,869	9,918
Total loans	592,253	577,804
Commercial Real Estate | Construction and Land Development
Financing Receivable Recorded Investment Past Due [Line Items]
Current	211,425	170,495
30-89 Days Past Due	439	7,784
Non-accrual	1,073	1,385
Total Past-Due	1,512	9,169
Total loans	212,937	179,664
Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Current	207,144	205,765
30-89 Days Past Due	562	1,315
Non-accrual	857	1,197
Total Past-Due	1,419	2,512
Total loans	208,563	208,277
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Current	85,520	84,546
30-89 Days Past Due	395	846
90+ Days Past Due	15	3
Non-accrual	455	719
Total Past-Due	865	1,568
Total loans	86,385	86,114
Consumer | Residential and Home Equity
Financing Receivable Recorded Investment Past Due [Line Items]
Current	71,185	69,950
30-89 Days Past Due	135	588
Non-accrual	448	631
Total Past-Due	583	1,219
Total loans	71,768	71,169
Consumer | Consumer and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Current	14,335	14,596
30-89 Days Past Due	260	258
90+ Days Past Due	15	3
Non-accrual	7	88
Total Past-Due	282	349
Total loans	$ 14,617	$ 14,945