Note 15 - Subsequent Events (Details Textual) $ in Millions	Jan. 09, 2019 USD ($)
Subsequent Event [Member] \| Chief Executive Officer [Member]
Payments for Separation Agreement	$ 0.6

Amount of payments made in a separation agreement.

No definition available.

Name:	cutr_PaymentsForSeparationAgreement
Namespace Prefix:	cutr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration