Loans and Allowance for Loan Losses - Aging (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Aging categories of performing loans and nonaccrual loans
Current	$ 976,723		$ 771,702
30-59 Days Past Due	3,175		8,981
60-89 Days Past Due	5,609		8,551
90 Days + Past Due	9,326		9,063
Total Past Due	18,110		26,595
Total Loans	994,833	$ 994,833	798,297	$ 762,926
Non-Accrual	8,025		3,949
90 Days+ Still Accruing	$ 1,372		5,306
Period loan is past due when placed on non-accrual status	90 days
Commercial
Aging categories of performing loans and nonaccrual loans
Current	$ 682,841		541,803
30-59 Days Past Due	2,805		3,972
60-89 Days Past Due	5,409		6,425
90 Days + Past Due	8,604		8,552
Total Past Due	16,818		18,949
Total Loans	699,659	699,659	560,752	549,091
Non-Accrual	7,593		3,462
90 Days+ Still Accruing	1,011		5,090
Commercial Business
Aging categories of performing loans and nonaccrual loans
Current	323,621		233,464
30-59 Days Past Due	2,758		3,738
60-89 Days Past Due	615		1,500
90 Days + Past Due	113		176
Total Past Due	3,486		5,414
Total Loans	327,107	327,107	238,878
Non-Accrual	85		107
90 Days+ Still Accruing	27		69
Commercial Real Estate
Aging categories of performing loans and nonaccrual loans
Current	278,150		270,600
30-59 Days Past Due	47		234
60-89 Days Past Due	4,794		4,925
90 Days + Past Due	5,697		5,021
Total Past Due	10,538		10,180
Total Loans	288,688	288,688	280,780
Non-Accrual	5,020
90 Days+ Still Accruing	677		5,021
Acquisition & Development
Aging categories of performing loans and nonaccrual loans
Current	81,070		37,739
90 Days + Past Due	2,794		3,355
Total Past Due	2,794		3,355
Total Loans	83,864	83,864	41,094
Non-Accrual	2,488		3,355
90 Days+ Still Accruing	307
Residential
Aging categories of performing loans and nonaccrual loans
Current	211,013		167,392
30-59 Days Past Due	23		4,478
60-89 Days Past Due	195		2,126
90 Days + Past Due	615		511
Total Past Due	833		7,115
Total Loans	211,846	211,846	174,507	152,168
Non-Accrual	397		487
90 Days+ Still Accruing	254		216
Home Equity
Aging categories of performing loans and nonaccrual loans
Current	65,350		45,815
30-59 Days Past Due	290		120
60-89 Days Past Due	5
Total Past Due	295		120
Total Loans	65,645	65,645	45,935	43,605
Non-Accrual	35
Consumer
Aging categories of performing loans and nonaccrual loans
Current	17,519		16,692
30-59 Days Past Due	57		411
90 Days + Past Due	107
Total Past Due	164		411
Total Loans	17,683	$ 17,683	$ 17,103	$ 18,062
90 Days+ Still Accruing	$ 107