Parent Company Only Financial Information - Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 94,679	$ 74,354
Other assets	139,379	89,134
Total assets	7,207,304	7,063,521
Liabilities
Accrued expenses and other liabilities	103,804	89,987
Total liabilities	6,421,976	6,218,496
Total stockholders' equity	785,328	845,025	$ 575,673	$ 594,393
Total liabilities and stockholders’ equity	7,207,304	7,063,521
Holding Company
Assets
Cash and due from banks	50	50
Interest-bearing deposits in subsidiary bank	14,961	15,202
Due from subsidiary bank	1,353	547
Other investment securities	234	220
Other assets	2,877	5,248
Total assets	805,713	867,582
Liabilities
Accrued expenses and other liabilities	3,336	5,660
Dividends payable	781	767
Junior subordinated debt securities	16,268	16,130
Total liabilities	20,385	22,557
Total stockholders' equity	785,328	845,025
Total liabilities and stockholders’ equity	805,713	867,582
Holding Company | PEOPLES BANK
Assets
Investments in subsidiaries	774,294	834,037
Holding Company | Non-Bank
Assets
Investments in subsidiaries	$ 11,944	$ 12,278