Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Interest income	$ 12,912	$ 11,766	$ 37,744	$ 33,884
Interest expense	2,032	1,928	6,044	5,485
Net interest income (loss)	10,880	9,838	31,700	28,399
Provision for loan losses	825	875	2,025	2,500
Noninterest income	3,017	2,124	8,721	6,380
Noninterest expense	7,800	6,871	23,170	20,977
Net income before taxes	5,272	4,216	15,226	11,302
Income tax (provision) benefit	(1,839)	(1,489)	(5,481)	(3,987)
Net income (loss)	3,433	$ 2,727	9,745	$ 7,315
Total assets	1,289,746		1,289,746		$ 1,217,293
Commercial and Retail Banking [Member]
Segment Reporting Information [Line Items]
Interest income	12,824		37,501
Interest expense	1,932		5,750
Net interest income (loss)	10,892		31,751
Provision for loan losses	825		2,025
Noninterest income	1,014		3,036
Noninterest expense	6,484		19,516
Net income before taxes	4,597		13,246
Income tax (provision) benefit	(1,596)		(4,686)
Net income (loss)	3,001		8,560
Total assets	1,277,213		1,277,213
Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Interest income	87		243
Interest expense
Net interest income (loss)	87		243
Provision for loan losses
Noninterest income	2,003		5,685
Noninterest expense	1,256		3,471
Net income before taxes	834		2,457
Income tax (provision) benefit	(299)		(909)
Net income (loss)	535		1,548
Total assets	9,678		9,678
Corporate [Member]
Segment Reporting Information [Line Items]
Interest income	1		1
Interest expense	100		295
Net interest income (loss)	(99)		(294)
Provision for loan losses
Noninterest income
Noninterest expense	60		183
Net income before taxes	(159)		(477)
Income tax (provision) benefit	56		114
Net income (loss)	(103)		(363)
Total assets	119,431		119,431
Eliminations [Member]
Segment Reporting Information [Line Items]
Interest income			(1)
Interest expense			(1)
Net interest income (loss)
Provision for loan losses
Noninterest income
Noninterest expense
Net income before taxes
Income tax (provision) benefit
Net income (loss)
Total assets	$ (116,576)		$ (116,576)