Note 2 - Variable Interest Entity (Details Textual) (USD $)	3 Months Ended	21 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Dec. 31, 2014
Annual Recurring Contract Value	$ 12,500,000nrci_AnnualRecurringContractValue
Proforma Minimum EBITDA Margin	35.00%nrci_ProformaMinimumEBITDAMargin
Variable Interest Entity, Noncontrolling Interest, Put Option	0		0
Variable Interest Entity Profit or Loss	(289,000)nrci_VariableInterestEntityProfitOrLoss	(331,000)nrci_VariableInterestEntityProfitOrLoss
Variable Interest Entity, Consolidated, Carrying Amount, Assets	539,000		539,000	784,000
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities	353,000		353,000	309,000
Connect [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	49.00%
Capital Contributions to Variable Interest Entity			2,800,000
Additional Capital Contributions to Variable Interest Entity	$ 1,300,000
NG Customer-Connect, LLC [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	25.00%		25.00%
Illuminate Health, LLC [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	26.00%		26.00%

Represents potential future additional capital contributions to a variable interest entity.

No definition available.

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

- Definition

Annual Contract Value held by VIE at which time reporting entity will be required to acquire remaining interest in VIE.

+ References

No definition available.

+ Details

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

- Definition

Represents the capital contribution to a variable interest entity.

+ References

No definition available.

+ Details

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

- Definition

Pro forma EBITDA margin for the VIE's revenue going forward approved by members, at which time reporting entity will be required to acquire remaining interest in VIE.

+ References

No definition available.

+ Details

Name:	nrci_ProformaMinimumEBITDAMargin
Namespace Prefix:	nrci_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The price as of the reporting date of noncontrolling interests of a VIE consolidated in the financial statements which are redeemable by the reporting entity upon occurrence of an event that is not solely within the control of the reporting entity.

+ References

No definition available.

+ Details

Name:	nrci_VariableInterestEntityNoncontrollingInterestPutOption
Namespace Prefix:	nrci_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The variable interest entity's net profit or loss for the reporting period which has been consolidated by the reporting entity.

+ References

No definition available.

+ Details

Name:	nrci_VariableInterestEntityProfitOrLoss
Namespace Prefix:	nrci_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (bb)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685

+ Details

Name:	us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

+ References

+ Details

Name:	us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 5A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=SL6759159-111685

+ Details

Name:	us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=nrci_ConnectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=nrci_IlluminateHealthLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=nrci_NGCustomerConnectLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: