Note 7 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2015
Predictive Analytics [Member]
Goodwill, Reclassification to Held for Sale	$ 300
Intangible Assets, Gross, Reclassification to Held for Sale	2,200
Intangible Assets, Net, Accumulated Amortization, Reclassification to Held for Sale	$ 1,300
Goodwill, Reclassification to Held for Sale		$ 276

Represents the reclassification of intangible assets accumulated amortization to held for sale.

No definition available.

Name:	nrci_IntangibleAssetsNetAccumulatedAmortizationReclassificationToHeldForSale
Namespace Prefix:	nrci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration