Name:	nstg_ExtendedProductWarrantyPeriod
Namespace Prefix:	nstg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the method (vendor-specific objective evidence, third-party evidence, estimated selling price) used to establish the selling price of the significant unit of accounting for allocation of the consideration of the multiple-deliverable arrangement.

No definition available.

Name:	nstg_PercentageUsedToDetermineDiscountForStandaloneSales
Namespace Prefix:	nstg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Extended 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.

Name:	nstg_SignificantAccountingPoliciesLineItems
Namespace Prefix:	nstg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The standard product warranty liability period. Does not include increases or decreases in an extended warranty liability.

No definition available.

Name:	nstg_StandardProductWarrantyPeriod
Namespace Prefix:	nstg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Describes the nature of the extended product warranties, which generally require additional fees to be paid by the buyer, and other guarantee contracts excluded from the initial recognition and initial measurement requirements. Does not include disclosures for standard product warranties, which typically have substantially shorter periods of time or provide less coverage, or both.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248