Parent Company financial statements - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 38,090	$ 43,519	$ 29,354
Adjustments:
Net losses (gains) on investment securities	1,976		(918)
Decrease in other assets	(1,701)	1,128	(12,268)
Increase (decrease) in other liabilities	(48)	1,875	13,549
Stock based compensation	534	546	570
Net cash provided by operating activities	42,357	40,771	37,180
Cash flows from investing activities:
Net cash used in investing activities	(467,819)	(440,103)	(201,240)
Cash flows used in financing activities:
Retirement of common stock	(1,253)	(2,361)	(6,893)
Net cash provided by financing activities	183,397	451,073	361,099
Increase (decrease) in cash and cash equivalents	(242,065)	51,741	197,039
Cash and cash equivalents at beginning of period	279,933
Cash and cash equivalents at end of period	37,868	279,933
Peoples Bank
Cash flows from operating activities:
Net income	38,090	43,519	29,354
Adjustments:
Net losses (gains) on investment securities	31	(2)	6
Undistributed net income of subsidiaries	(29,131)	(27,506)	(19,814)
Decrease in other assets	(591)	(429)	(255)
Increase (decrease) in other liabilities	(40)		148
Stock based compensation	534	546	570
Net cash provided by operating activities	8,893	16,128	10,009
Cash flows from investing activities:
Sale of equity securities			279
Net cash used in investing activities			279
Cash flows used in financing activities:
Investment in subsidiary			(30,000)
Retirement of common stock	(1,253)	(2,361)	(6,893)
Cash dividends paid	(11,325)	(10,792)	(10,518)
Net cash provided by financing activities	(12,578)	(13,153)	(14,411)
Increase (decrease) in cash and cash equivalents	(3,685)	2,975	(4,123)
Cash and cash equivalents at beginning of period	4,044	1,069	5,192
Cash and cash equivalents at end of period	$ 359	$ 4,044	1,069
Subordinated debentures
Cash flows used in financing activities:
Proceeds from long-term debt			33,000
Subordinated debentures | Peoples Bank
Cash flows used in financing activities:
Proceeds from long-term debt			$ 33,000