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Summary of Significant Accounting Policies (Schedule of ResponseDX Accounts Receivable) (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Aug. 31, 2013
Health Care Organization, Receivable and Revenue Disclosures [Line Items]      
Allowance for doubtful accounts $ (2,071,706)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ (2,404,659)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ (257,000)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Total 7,810,417us-gaap_AccountsReceivableNetCurrent 6,225,923us-gaap_AccountsReceivableNetCurrent  
ResponseDX [Member]      
Health Care Organization, Receivable and Revenue Disclosures [Line Items]      
Accounts receivable 8,844,289us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
6,738,198us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
 
Allowance for doubtful accounts (2,071,706)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
(2,404,659)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
 
Total 6,772,583us-gaap_AccountsReceivableNetCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
4,333,539us-gaap_AccountsReceivableNetCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
 
ResponseDX [Member] | Medicare [Member]      
Health Care Organization, Receivable and Revenue Disclosures [Line Items]      
Accounts receivable 2,814,989us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
/ rgdx_HealthCareOrganizationsRevenueSourceAxis
= rgdx_MedicareMember
2,422,611us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
/ rgdx_HealthCareOrganizationsRevenueSourceAxis
= rgdx_MedicareMember
 
Private Payor [Member] | ResponseDX [Member]      
Health Care Organization, Receivable and Revenue Disclosures [Line Items]      
Accounts receivable $ 6,029,300us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
/ rgdx_HealthCareOrganizationsRevenueSourcesAxis
= rgdx_PrivatePayorMember
$ 4,315,587us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_HealthCareOrganizationRevenueSourcesAxis
= rgdx_ResponsedxMember
/ rgdx_HealthCareOrganizationsRevenueSourcesAxis
= rgdx_PrivatePayorMember