XML 18 R6.htm IDEA: XBRL DOCUMENT v3.20.2

Unaudited Condensed Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) - Series G redeemable convertible preferred stock - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Mar. 31, 2019
Sale of temporary equity, price per share (in dollars per share)	$ 0.078	$ 0.078
Issuance costs	$ 28	$ 96

X

- Definition

Sale of Temporary Equity, Price Per Share

+ References

No definition available.

+ Details

Name:	exdx_SaleOfTemporaryEquityPricePerShare
Namespace Prefix:	exdx_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Temporary Equity, Issuance Costs

+ References

No definition available.

+ Details

Name:	exdx_TemporaryEquityIssuanceCosts
Namespace Prefix:	exdx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_SeriesGPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: