The buildings that serve as collateral for Lexicon's mortgage loan.

No definition available.

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

- Definition

Conv Debt Instrument Interest Rate Stated Percentage - contractual interest rate for convertible debt bonds under the debt agreement

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

The land that serves as collateral for Lexicon's mortgage loan.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Mortgage Debt Balloon Payment_LXRX - Balloon payment due at the end of the 2-year maturity date of mortgage loan with Revere.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Mortgage Debt Instrument_Revere_LXRX - Principal loan amount borrowed, using Woodlands Campus as collateral

+ References

No definition available.

+ Details

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

- Definition

Mortgage Debt Interest Rate BasePlus_Revere_LXRX - represents a base for the range of the interest rate that will be charged on the Revere loan. Interest charged will be greater of 30-day LIBOR plus 5.5% or 7.5%

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Mortgage Debt Interest Rate_Base_Revere_LXRX - interest rate in Revere loan agreement is 30-day LIBOR plus 5.5% as base rate. Interest charged is the greater of base or 7.5%

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Mortgage Debt Issue Costs_Revere_LXRX - represents the total debt issue costs incurred in connection with the Revere debt agreement

+ References

No definition available.

+ Details

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Namespace Prefix:	lxrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

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-Publisher FASB
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-Topic 470
-SubTopic 20
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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

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- Definition

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

+ References

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-Publisher FASB
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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

Amount of unamortized debt discount (premium) and debt issuance costs.

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- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

The total of the cash outflow during the period which has been paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt and the cost incurred directly for the issuance of equity securities.

+ References

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- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

+ References

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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

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-SubTopic 10
-Section S99
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Debt Obligations (Details) $ / shares in Units, $ in Millions	1 Months Ended
	Nov. 30, 2014 USD ($)	Sep. 30, 2019 USD ($)	Aug. 30, 2018 USD ($)	Dec. 18, 2017 USD ($)	Nov. 20, 2014 $ / shares
Debt Instrument [Line Items]
Debt Issuance Costs, Gross				$ 4.1
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net		$ 2.6
Proceeds from Convertible Debt	$ 87.5
Conv Debt Instrument Interest Rate Stated Percentage					5.25%
Debt Instrument, Convertible, Conversion Ratio	118.4553
Debt Instrument, Convertible, Conversion Price \| $ / shares					$ 8.442
Debt Issuance Cost	$ 3.4
Unamortized Debt Issuance Expense		1.0
Debt Instrument, Fair Value Disclosure		76.0
Mortgage Debt Instrument_Revere_LXRX		11.3	$ 12.9
Mortgage Debt Interest Rate_Base_Revere_LXRX			5.50%
Mortgage Debt Interest Rate BasePlus_Revere_LXRX			7.50%
Mortgage Debt Balloon Payment_LXRX			$ 10.3
Mortgage Debt Issue Costs_Revere_LXRX		0.2	$ 0.4
Buildings Collateral		59.2
Land Collateral		$ 2.7
Debt Instrument, Interest Rate, Stated Percentage		9.00%
Debt Instrument, Face Amount				$ 150.0