Acquisitions - Pro Forma Result of Comparable Prior Reporting Period (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) $ / shares
Business Combination and Asset Acquisition [Abstract]
Net Interest Income	$ 168,693
Provision for Loan Losses	2,276
Net Interest Income after Provision for Loan Losses	166,417
Non-interest Income	43,472
Non-interest Expense	134,446
Income before Income Taxes	75,443
Income Tax Expense	13,246
Net Income	$ 62,197
Basic Earnings Per Share (in USD per share) | $ / shares	$ 1.43
Diluted Earnings Per Share (in USD per share) | $ / shares	$ 1.43