Collaboration and Commercial Technology Licensing Agreements (Details 2) (Collaborative Diagnostic Development Agreement with Pfizer Inc., USD $) In Millions, unless otherwise specified	1 Months Ended
Nov. 30, 2007
Collaborative Diagnostic Development Agreement with Pfizer Inc.
Contract research arrangements
Initial payment received upon joint agreement	$ 1.5
Payment receivable upon joint agreement on gene identification plan	2.2
Additional payments receivable to conduct next phase of development	5.0
Final payment receivable upon completion of clinical validation	$ 1.5

Represents the final payment receivable upon completion of clinical validation under the entity's joint agreement.

No definition available.

Name:	ghdx_ResearchAndDevelopmentArrangementFinalPaymentReceivableUponCompletionOfClinicalValidation
Namespace Prefix:	ghdx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant