SUPPLEMENTAL PRO FORMA INFORMATION (Details Textual) (USD $)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Business Acquisitions Pro Forma Interest Expense	$ 165,000	$ 361,000
Business Acquisitions Pro Forma Additional Beneficial Conversion		463,000
Business Acquisitions Pro Forma Elimination Beneficial Conversion	258,000
Business Acquisitions Pro Forma Elimination Of Investment Banking Fees	$ 450,000

The pro forma elimination Beneficial Conversion Feature for the period as if the business combination or combinations had been completed at the beginning of a period.

No definition available.

Name:	nvlt_BusinessAcquisitionsProFormaEliminationBeneficialConversion
Namespace Prefix:	nvlt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration