Parent Company-only 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 (loss)	$ 6,161	$ 5,094	$ (3,819)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Share-based compensation	86	150	159
Amortization of debt issuance costs	38	111	112
Decrease (increase) in other assets	879	2,124	331
(Decrease) increase in accrued expenses and other liabilities	(2,085)	3,160	(1,732)
Net cash provided by operating activities	7,036	7,596	6,281
Cash Flows from Investing Activities:
Net cash (used in) provided by investing activities	(122,051)	(55,205)	82,924
Cash Flows from Financing Activities:
Proceeds from issuance of senior notes	12,000	0	0
Repayments of senior notes	(12,000)	0	0
Net cash provided by (used in) financing activities	106,463	60,018	(93,973)
Net (decrease) increase in cash and cash equivalents	(8,552)	12,409	(4,768)
Cash and cash equivalents at beginning of year	47,045	34,636	39,404
Cash and cash equivalents at end of year	38,493	47,045	34,636
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	10,472	7,210	15,037
Supplemental Disclosure of Non-cash Activity:
Deferred debt issuance costs	360	0	0
Parent Company
Cash Flows from Operating Activities:
Net income (loss)	6,161	5,094	(3,819)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Equity in undistributed net income (loss) of subsidiary	(7,642)	(6,581)	2,276
Dividends received from Patriot Bank, N.A.	900	500	2,000
Share-based compensation	86	150	159
Amortization of debt issuance costs	38	111	112
Decrease (increase) in other assets	99	955	(540)
(Decrease) increase in accrued expenses and other liabilities	(8)	(399)	(315)
Net cash provided by operating activities	(366)	(170)	(127)
Cash Flows from Investing Activities:
Net (increase) decrease in investment in Patriot Bank N.A.	0	(1)	8
Net cash (used in) provided by investing activities	0	(1)	8
Cash Flows from Financing Activities:
Proceeds from issuance of senior notes	12,000	0	0
Repayments of senior notes	(12,000)	0	0
Net cash provided by (used in) financing activities	0	0	0
Net (decrease) increase in cash and cash equivalents	(366)	(171)	(119)
Cash and cash equivalents at beginning of year	377	548	667
Cash and cash equivalents at end of year	11	377	548
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	1,897	1,570	1,776
Supplemental Disclosure of Non-cash Activity:
Deferred debt issuance costs	$ 360	$ 0	$ 0