Debt Instrument, Periodic Payments, Percent Of Principal

No definition available.

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- Definition

Unamortized Prepaid Expense

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

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- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=egrx_AmendmentCreditAgreementMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
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Data Type:	na
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Period Type:

- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=egrx_SecondAmendedAndRestatedCreditAgreementMember
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- Details

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- Details

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Debt (Details) - USD ($)		3 Months Ended	9 Months Ended
Debt (Details) - USD ($)	Aug. 08, 2017	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Short-term Debt [Line Items]
Current portion of long-term debt		$ 5,000,000	$ 5,000,000	$ 6,250,000
Unamortized debt issuance expense		400,000
Unamortized Prepaid Expense		900,000
Revolving Credit Facility \| Amendment Credit Agreement
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 110,000,000	50,000,000
Credit agreement, term	3 years
Debt instrument, periodic payments, percent of principal (in percentage)			2.50%
Line of Credit \| Amendment Credit Agreement
Short-term Debt [Line Items]
Proceeds from line of credit	$ 50,000,000	$ 40,000,000
Line of credit facility, maximum borrowing capacity	$ 100,000,000
Credit agreement, term	3 years
Letter of Credit \| Amendment Credit Agreement
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 5,000,000
London Interbank Offered Rate (LIBOR) \| Second Amended And Restated Credit Agreement
Short-term Debt [Line Items]
Interest rate margin	1.00%
Minimum \| Amendment Credit Agreement
Short-term Debt [Line Items]
Commitment fee percentage (in percentage)	0.35%
Minimum \| London Interbank Offered Rate (LIBOR) \| Amendment Credit Agreement
Short-term Debt [Line Items]
Interest rate margin	2.25%
Minimum \| Prime Rate \| Amendment Credit Agreement
Short-term Debt [Line Items]
Interest rate margin	1.25%
Maximum \| Amendment Credit Agreement
Short-term Debt [Line Items]
Commitment fee percentage (in percentage)	0.45%
Maximum \| London Interbank Offered Rate (LIBOR) \| Amendment Credit Agreement
Short-term Debt [Line Items]
Interest rate margin	3.00%
Maximum \| Prime Rate \| Amendment Credit Agreement
Short-term Debt [Line Items]
Interest rate margin	2.00%