Parent Company Financial Statements (Balance Sheets - Parent Company) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 176,486		$ 103,930
Income tax benefit	3,791		1,217
Total assets	2,446,447		1,584,899
Liabilities
Subordinated notes	44,555		44,440
Total liabilities	2,236,979		1,414,196
Shareholders' equity	209,468	$ 180,259	170,703	$ 167,968	$ 162,867	$ 151,760
Total liabilities and shareholders' equity	2,446,447		1,584,899
Parent Company
Assets
Cash and cash equivalents	29,105		35,210
Investment in banking subsidiary	223,624		178,240
Investment in captive insurance subsidiary	2,306		1,668
Income tax benefit	158		520
Other assets	41		99
Total assets	255,234		215,737
Liabilities
Subordinated notes	44,555		44,440
Accrued expenses and other liabilities	1,211		594
Total liabilities	45,766		45,034
Shareholders' equity	209,468		170,703
Total liabilities and shareholders' equity	$ 255,234		$ 215,737