XML 28 R6.htm IDEA: XBRL DOCUMENT v3.20.4

Consolidated Statements of Convertible Preferred Stock and Stockholders’ Deficit (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
IPO
Common stock issuance costs	$ 10,843,925
Series C convertible preferred stock
Convertible preferred stock issuance costs	$ 53,509	$ 3,278,302

X

- Definition

Direct costs associated with issuing stock classified as temporary equity.

+ References

No definition available.

+ Details

Name:	apre_TemporaryEquityStockIssuedIssuanceCosts
Namespace Prefix:	apre_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

+ Details

Name:	us-gaap_PaymentsOfStockIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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

X

- Details

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