Stock Options and Restricted Shares - Common Stock Options (Details) - Common stock options $ / shares in Units, $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) $ / shares shares		Dec. 31, 2021 USD ($) $ / shares shares
Number
Outstanding, beginning balance (in shares)	56,147
Granted (in shares)	0
Exercised (in shares)	(14,000)
Forfeited (in shares)	0
Outstanding, ending balance (in shares)	42,147		56,147
Additional disclosures
Options exercisable (in shares)	42,147
Weighted-average exercise price of options outstanding (in dollars per share) | $ / shares	$ 25.00		$ 24.51
Weighted-average contractual remaining term for options outstanding	9 months 25 days		1 year 2 months 8 days
Aggregate intrinsic value | $	$ 1,994	[1]	$ 3,985	[2]
Weighted- average exercise price of options exercisable (in dollars per share) | $ / shares	$ 25.00
Weighted-average contractual remaining term for options exercisable	9 months 25 days
Aggregate intrinsic value of options exercisable | $	$ 1,994	[1]

[1] The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $72.31 per common share at June 30, 2022 for the 42,147 options that were in-the-money at June 30, 2022.

[2] The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $95.50 per common share at December 31, 2021 for the 56,147 options that were in-the-money at December 31, 2021.