| Component: (Network and Table) | |
|---|---|
| Network | 155 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Long-Lived Assets By Country (Detail) (http://www.cuiglobal.com/role/SummaryOfSignificantAccountingPoliciesLonglivedAssetsByCountryDetail) |
| Table | Long Lived Assets [Table] |
| Reporting Entity [Axis] | 0001108967 (http://www.sec.gov/CIK) |
| Long Lived Assets [Line Items] | Period [Axis] | |||||||
|---|---|---|---|---|---|---|---|---|
2016-12-31 | 2015-12-31 | |||||||
| Geographical [Axis] | Geographical [Axis] | |||||||
| USA | United Kingdom | Other | Geographical [Domain] | USA | United Kingdom | Other | Geographical [Domain] | |
Long-Lived Assets | ||||||||