Accrued expenses (Details Textual) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Accrued Angel Machine Refurbishment Costs	$ 600,000	$ 0

The amount represents accrued angel machine refurbishment costs as on the reporting period.

No definition available.

Name:	nuot_AccruedAngelMachineRefurbishmentCosts
Namespace Prefix:	nuot_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant