Business Overview (Details)	Dec. 31, 2017 mm
Minimum
Business Overview
Micro Crown treatable vessel length with a single device	2.5
Maximum
Business Overview
Micro Crown treatable vessel length with a single device	4

Represents the length of vessel approved for treatment by the Micro Crown device.

No definition available.

Name:	csii_MicroCrownTreatableVesselLength
Namespace Prefix:	csii_
Data Type:	num:lengthItemType
Balance Type:	na
Period Type:	instant