Stock-Based Compensation - Schedule Of Additional Information on Stock Options Outstanding (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Intrinsic value of stock options exercised	[1]	$ 256,402		$ 1,113,862
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average grant date fair value of RSUs granted	[2]	$ 0	$ 13.93	$ 6.91	$ 13.93

[1] (3) Shares of the Company’s common stock, traded under the symbol “THRN,” have been publicly traded since September 23, 2021, when the Company’s common stock was listed and began trading on the Nasdaq Global Select Market (the “Nasdaq”). No market for the Company’s stock existed prior to September 23, 2021. There were no stock option exercises prior to the IPO date.

[2] (1) The three and nine months ended September 30, 2021 excludes 472,590 RSUs issued in exchange for outstanding profits interest units held by employees of Onegevity, in connection with the merger. The RSU exchange was determined to be materially a “like-for-like” transaction and there was no incremental stock compensation expense recorded by the Company. The Company compared the fair value of the RSUs immediately before and after the exchange and determined that the exchange did not result in incremental compensation expense.