Commitments - Other Commitment (Details) $ in Millions	3 Months Ended
Mar. 31, 2017 USD ($) item employee	Jun. 30, 2018 USD ($)
Commitments
Interest rate		12.00%
Revolving loans
Commitments
Amount of potential loans offered	$ 15.0
Interest rate	2.00%
Expiration period	7 years
Members in the board of the entity \| item	5
Lannett employees as members of the board of the entity \| employee	2
Revolving loans \| Other Assets
Commitments
Current amount due from outstanding loan		$ 11.2
Revolving loans \| If loan balance is equal to or greater than $7.5 million
Commitments
Minimum Amount to be Considered for Conversion of Loan to Ownership Interest	$ 7.5
Ownership interest for conversion (in percentage)	50.00%

Minimum amount to be considered for conversion of loan to ownership interest.

No definition available.

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Balance Type:	debit
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- Definition

Number of employees of the company who are the members in the board of the entity.

+ References

No definition available.

+ Details

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- Definition

Number of members comprised in the board of the entity.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Ownership interest for conversion under agreement advances receivable, contractual obligations.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

The expiration period of agreement with VIE.

+ References

No definition available.

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- 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

Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date within one year where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
-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:	instant

- Definition

The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=77990344&loc=SL6759159-111685

+ Details

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Balance Type:	debit
Period Type:	duration

- Details

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