Condensed Consolidated Statements of Cash Flows (Parenthetical) $ in Thousands	6 Months Ended
Jun. 30, 2015 USD ($)
Common stock issued for prepaid consulting services	$ 63

It represents common stock issued for prepaid consulting services.

No definition available.

Name:	cui_CommonStockIssuedForPrepaidConsultingServices
Namespace Prefix:	cui_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration