Summary of Activity in Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Beginning Balance	$ 10,190	$ 10,268
Currency translation adjustment	28	(78)
Ending Balance	10,218	10,190
Identity
Goodwill [Line Items]
Beginning Balance	3,554	3,554
Ending Balance	3,554	3,554
Premises
Goodwill [Line Items]
Beginning Balance	6,636	6,714
Currency translation adjustment	28	(78)
Ending Balance	$ 6,664	$ 6,636