Leases - Additional Information (Detail)	3 Months Ended
Mar. 31, 2022 renewalOption
Leases [Abstract]
Number of lease renewal options (in renewal options)	1

Lessee, Operating Lease, Number of Renewal Term Options

No definition available.

Name:	tcbk_LesseeOperatingLeaseNumberOfRenewalTermOptions
Namespace Prefix:	tcbk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration