Loans and Allowance for Loan Losses (Details 3) - Commercial [Member] - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	$ 1,083,754	$ 905,335
30-59 days past due	13	545
60-89 days past due
Greater than 90 days	282	1,073
Total commercial loans	1,084,049	906,953
Owner occupied RE [Member]
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	372,120	316,818
30-59 days past due
60-89 days past due
Greater than 90 days
Total commercial loans	372,120	316,818
Non-owner occupied RE [Member]
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	398,973	312,477
30-59 days past due		129
60-89 days past due
Greater than 90 days	193	192
Total commercial loans	399,166	312,798
Construction [Member]
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	68,415	51,179
30-59 days past due
60-89 days past due
Greater than 90 days
Total commercial loans	68,415	51,179
Business [Member]
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	244,246	224,861
30-59 days past due	13	416
60-89 days past due
Greater than 90 days	89	881
Total commercial loans	$ 244,348	$ 226,158