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Note 6 - Deferred Service Contract Revenue (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Deferred Revenue Costs Incurred	$ 1.9	$ 1.6

X

- Definition

Costs incurred under service contracts.

+ References

No definition available.

+ Details

Name:	cutr_DeferredRevenueCostsIncurred
Namespace Prefix:	cutr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration