Name:	nbrv_DefinedContributionPlanEmployerMatchingContributionPercentFirstLevel
Namespace Prefix:	nbrv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage employer matches of the employee's first level of percentage contribution matched.

No definition available.

Name:	nbrv_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchFirstLevel
Namespace Prefix:	nbrv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage employer matches of the employee's second level of percentage contribution matched.

No definition available.

Name:	nbrv_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchSecondLevel
Namespace Prefix:	nbrv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The second level of percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

No definition available.

Name:	nbrv_DefinedContributionPlanEmployerMatchingContributionPercentSecondLevel
Namespace Prefix:	nbrv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of employees' gross pay for which the employer contributes to a state plan classified as a defined contribution plan as required by Austrian labor law.

No definition available.

Name:	nbrv_DefinedContributionPlanEmployerMonthlyContributionPercent
Namespace Prefix:	nbrv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Amount of cost for defined contribution plan.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.