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Debt - 2017 Credit Facility (Details) - USD ($) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 05, 2017 | May 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018
Long-term debt |  |  |  |
Long-term debt |  |  | $ 293,859,000 | $ 141,347,000
Current portion of long-term debt |  |  | 20,000,000 | $ 11,667,000
MidCap Financial Trust |  |  |  |
Long-term debt |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 60,000,000.0 |  |
Proceeds from lines of credit | $ 40,000,000.0 |  |  |
Additional capacity available |  | 20,000,000.0 |  |
Debt issuance costs, line of credit arrangements |  | $ 400,000 |  |
Repayments of debt |  |  | 11,700,000 |
Interest payment period |  | 24 months |  |
Net carrying amount |  |  | 28,300,000 |
Long-term debt |  |  | 20,000,000.0 |
Current portion of long-term debt |  |  | $ 8,300,000 |
MidCap Financial Trust | LIBOR |  |  |  |
Long-term debt |  |  |  |
Floor interest rate |  | 1.00% |  |
Basis spread on variable rate |  | 6.15% |  |

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- Definition Amount, before accumulated amortization, of debt issuance costs related to line of credit arrangements. 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 S45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68176171&loc=SL68176184-208336 + Details
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