XML 19 R37.htm IDEA: XBRL DOCUMENT v2.4.0.6

CONCENTRATIONS (Narrative) (Details)	3 Months Ended
CONCENTRATIONS (Narrative) (Details)	Mar. 31, 2013
Concentrations 1	100.00%

X

- Definition

Concentrations 1

+ References

No definition available.

+ Details

Name:	nrds_ConcentrationsZeroOneFourSevenOneOneNineThreeTwoFourJkNineThSNQRNineZ
Namespace Prefix:	nrds_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration