XML 47 R34.htm IDEA: XBRL DOCUMENT v3.10.0.1

Note 3 - Fair Value Measurements - Financial Assets Measured on a Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Total	$ 323,494	$ 168,623
Foreign Commercial Paper [Member]
Available-for-sale securities	123,861	19,854
US Treasury Securities [Member]
Available-for-sale securities	59,741
Debt Security, Corporate, US [Member]
Available-for-sale securities	59,087	17,520
United States Commercial Paper [Member]
Available-for-sale securities	61,885	39,863
Debt Security, Corporate, Non-US [Member]
Available-for-sale securities	5,046
Fair Value, Inputs, Level 1 [Member]
Total	73,615	91,386
Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]
Available-for-sale securities	59,741
Fair Value, Inputs, Level 1 [Member] | Debt Security, Corporate, US [Member]
Available-for-sale securities
Fair Value, Inputs, Level 1 [Member] | United States Commercial Paper [Member]
Available-for-sale securities
Fair Value, Inputs, Level 1 [Member] | Debt Security, Corporate, Non-US [Member]
Available-for-sale securities
Fair Value, Inputs, Level 1 [Member] | Foreign Commercial Paper [Member]
Available-for-sale securities
Fair Value, Inputs, Level 2 [Member]
Total	249,879	77,237
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]
Available-for-sale securities
Fair Value, Inputs, Level 2 [Member] | Debt Security, Corporate, US [Member]
Available-for-sale securities	59,087	17,520
Fair Value, Inputs, Level 2 [Member] | United States Commercial Paper [Member]
Available-for-sale securities	61,885	39,863
Fair Value, Inputs, Level 2 [Member] | Debt Security, Corporate, Non-US [Member]
Available-for-sale securities	5,046
Fair Value, Inputs, Level 2 [Member] | Foreign Commercial Paper [Member]
Available-for-sale securities	123,861	19,854
Fair Value, Inputs, Level 3 [Member]
Total
Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member]
Available-for-sale securities
Fair Value, Inputs, Level 3 [Member] | Debt Security, Corporate, US [Member]
Available-for-sale securities
Fair Value, Inputs, Level 3 [Member] | United States Commercial Paper [Member]
Available-for-sale securities
Fair Value, Inputs, Level 3 [Member] | Debt Security, Corporate, Non-US [Member]
Available-for-sale securities
Fair Value, Inputs, Level 3 [Member] | Foreign Commercial Paper [Member]
Available-for-sale securities
Money Market Funds [Member]
Available-for-sale securities	13,874	91,386
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities	13,874	91,386
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109979856&loc=d3e26610-111562

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=hrtx_ForeignCommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_DomesticCorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=hrtx_UnitedStatesCommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_ForeignCorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=hrtx_ForeignCommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CashAndCashEquivalentsAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: