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Debt Obligations - Narrative (Details) - USD ($) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 31, 2018 | Dec. 31, 2017 | Nov. 30, 2014 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Aug. 30, 2018 | Dec. 18, 2017
Debt Instrument |  |  |  |  |  |  |  |
Proceeds from Convertible Debt |  |  | $ 87,500,000 |  | $ 75,800,000 |  |  |
Convertible Debt Instrument Interest Rate Stated Percentage |  |  |  | 5.25% |  |  |  |
Debt Issuance Cost |  |  | $ 3,400,000 |  |  |  |  |
Debt instrument, term | 2 years | 5 years | 7 years |  |  |  |  |
Recognition of gain or loss on extinguishment | $ 0 |  |  | $ 0 | 1,003,000 | $ 0 |  |
Estimated useful life of assets | 10 years |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 9.00% |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 150,000,000
Debt Issuance Costs, Gross |  |  |  |  |  |  |  | $ 4,100,000
Convertible Debt |  |  |  |  | 11,600,000 |  |  |
Convertible Debt Exchange - Total cash consideration |  |  |  |  | $ 50,000,000 |  |  |
2020 Convertible debt exchange - share payment total |  |  |  |  | 10,368,956 |  |  |
2020 convertible debt exchange - percentage of principal |  |  |  |  | 85.00% |  |  |
2020 convertible debt exchange - accrued interest |  |  |  |  | $ 1,300,000 |  |  |
Convertible debt exchange |  |  |  |  | $ 9,600,000 |  |  |
Mortgage Debt Interest Rate_Base_Revere_LXRX |  |  |  |  |  |  | 5.50% |
Mortgage Debt Interest Rate BasePlus_Revere_LXRX |  |  |  |  |  |  | 7.50% |
Mortgage Debt Instrument_Revere_LXRX |  |  |  |  |  |  | $ 12,900,000 |
Mortgage Debt Balloon Payment_LXRX |  |  |  |  |  |  | $ 10,300,000 |

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- Definition 2020 convertible debt exchange - percentage of principal + References No definition available. + Details
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- Definition 2020 Convertible debt exchange - share payment total + References No definition available. + Details
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- Definition Convertible debt exchange + References No definition available. + Details
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- Definition Convertible Debt Exchange - Total cash consideration + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed under convertible debt, under the debt agreement. + References No definition available. + Details
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- 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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- 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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- 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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- Definition Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: 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(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&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 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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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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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 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=123570139&loc=d3e3255-108585 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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