Public Offering (Details) - USD ($) $ / shares in Units, $ in Millions	May 15, 2017	May 09, 2017
Shares to the public \| Pro-forma
Subsidiary, Sale of Stock [Line Items]
Sale of stock (shares)		2,800,000
Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Sale of stock (shares)	335,000
Over-allotment option \| Pro-forma
Subsidiary, Sale of Stock [Line Items]
Sale of stock (shares)		413,000
Public offering
Subsidiary, Sale of Stock [Line Items]
Sale of stock (shares)	2,800,000
Public offering price (usd per share)		$ 28.850
Underwriting discounts and commissions (usd per share)		1.731
Net proceeds (usd per share)		$ 27.119
Total proceeds from sale	$ 89.0
Underwriting discounts, commissions and other costs	5.8
Net proceeds	$ 83.2
Public offering \| Pro-forma
Subsidiary, Sale of Stock [Line Items]
Sale of stock (shares)		3,200,000

No definition available.

Name:	axdx_ProceedsFromSaleofCommonStockGross
Namespace Prefix:	axdx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Sale of Stock, Price Per Share Net of Discounts And Fees

+ References

No definition available.

+ Details

Name:	axdx_SaleofStockPricePerShareNetofDiscountsAndFees
Namespace Prefix:	axdx_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Sale of Stock, Underwriting Discounts And Commissions

+ References

No definition available.

+ Details

Name:	axdx_SaleofStockUnderwritingDiscountsAndCommissions
Namespace Prefix:	axdx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Sale of Stock, Underwriting Discounts And Commissions Per Share

+ References

No definition available.

+ Details

Name:	axdx_SaleofStockUnderwritingDiscountsAndCommissionsPerShare
Namespace Prefix:	axdx_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsidiarySaleOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=axdx_PublicStockOfferingSharesToThePublicMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ProFormaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_OverAllotmentOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=axdx_PublicStockOfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: