Description of Business and Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) segment branch $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares
Basis of Financial Statement Presentation [Abstract]
Date of commenced of operations	Jan. 28, 1999
Number of additional branch office locations | branch	7
Receivables [Abstract]
Minimum period for a loan past due to be classified under non accrual status	90 days
Income Taxes [Abstract]
Recognize interest, related to income tax	$ 0	$ 0
Recognize penalties, related to income tax	0	0
Uncertain tax positions	$ 0	0
Segment Reporting [Abstract]
Number of reportable segments | segment	1
Investment securities:
Net unrealized (losses) gains arising during the period	$ (294,000)	537,000
Tax effect related to the unrealized loss during the periods	76,000	(132,000)
Total unrealized (losses)/gains on investment securities	(218,000)	405,000
Basic earnings per common share
Net income available to common shareholders	$ 40,732,000	$ 28,399,000
Basic weighted-average common shares outstanding (in shares) | shares	11,888,429	11,850,223
Basic earnings per common share (in dollars per share) | $ / shares	$ 3.43	$ 2.40
Diluted earnings per common share
Net income available to common shareholders	$ 40,732,000	$ 28,399,000
Dividend on Preferred Series B	28,000	29,000
Net income attributable to diluted common shares	$ 40,760,000	$ 28,428,000
Basic weighted-average common shares outstanding (in shares) | shares	11,888,429	11,850,223
Dilutive potential common shares (in shares) | shares	232,287	139,385
Total diluted weighted-average common shares outstanding (in shares) | shares	12,120,716	11,989,608
Diluted earnings per common share (in dollars per share) | $ / shares	$ 3.36	$ 2.37
Common Stock Options
Diluted earnings per common share
Securities not included in the computation of diluted EPS (in shares) | shares	67,994	253,495
Computers and Software
Company Premises and Equipment [Abstract]
Estimated useful lives	3 years
Equipment | Minimum
Company Premises and Equipment [Abstract]
Estimated useful lives	5 years
Equipment | Maximum
Company Premises and Equipment [Abstract]
Estimated useful lives	10 years
Building
Company Premises and Equipment [Abstract]
Estimated useful lives	40 years
Parke Direct Lending LLC
Basis of Financial Statement Presentation [Abstract]
Joint venture, ownership percentage	51.00%