The amount of customer advances for sale of the product under the terms of the agreement.

No definition available.

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Data Type:	xbrli:monetaryItemType
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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

The amount of estimated net sales for guarantee gross profit to the company on sale of the product under the terms of the agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	lci_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The minimum amount of gross profit will guarantee to the company on sale of the product under the terms of the agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	lci_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Cash inflow for upfront payment to the company on sale of the product under the terms of the agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	lci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of upfront payment receivable by the company on sale of the product under the terms of the agreement.

+ References

No definition available.

+ Details

Name:	lci_UpfrontPaymentBalance
Namespace Prefix:	lci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130549-203045

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130532-203044

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044

+ Details

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

- Details

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- Details

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Period Type:

- Details

Name:	us-gaap_ProductOrServiceAxis=lci_LevothyroxineSodiumTabletsUspMember
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- Details

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Amneal Distribution and Transition Support Agreement (Details) - USD ($) $ in Thousands	Dec. 01, 2018	Nov. 09, 2018	Feb. 01, 2019	Dec. 31, 2018
Distribution and Transition Support Agreement
Deferred revenue				$ 23,998
Amneal Agreement \| Amneal \| Levothyroxine Sodium Tablets USP
Distribution and Transition Support Agreement
Upfront payment		$ 50,000
Minimum guarantee gross profit		50,000
Net sales for guarantee gross profit		$ 80,000
Proceeds form upfront payment	$ 43,000
Deferred revenue				$ 24,000
Amneal Agreement \| Amneal \| Levothyroxine Sodium Tablets USP \| Forecast
Distribution and Transition Support Agreement
Remaining upfront payment receivable			$ 7,000