Leases - Summary of Remaining Maturity of Existing Lease Liabilities (Parenthetical) (Details) $ in Thousands	Sep. 30, 2020 USD ($)
Leases [Abstract]
Operating lease payment on extension option	$ 3,822

Lessee, Operating Lease Payment on Extension Option

No definition available.

Name:	cts_LesseeOperatingLeasePaymentonExtensionOption
Namespace Prefix:	cts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant