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Note 5 - Warranty and Service Contracts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Product Warranties Disclosures [Abstract]
Deferred Revenue, Costs Incurred	$ 6.6cutr_DeferredRevenueCostsIncurred	$ 6.9cutr_DeferredRevenueCostsIncurred	$ 7.2cutr_DeferredRevenueCostsIncurred