Income Taxes - Schedule Of Components Of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current tax provision (benefit):
Federal tax	$ 6,823	$ 11,346	$ 9,590
State tax	1,374	668	(109)
Total current tax provision	8,197	12,014	9,481
Deferred tax provision (benefit)
Federal tax	3,532	(2,793)	3,375
State tax	453	(248)	513
Net operating loss carryforward		633	1,649
Total deferred tax provision (benefit)	3,985	(2,408)	5,537
Provision for income taxes	$ 12,182	9,606	15,018
Provision (benefit) for income taxes		$ (42)	$ 129