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Long-Term Debt - Additional Information (Details) - Term Loan |  | 9 Months Ended
--- | --- | ---
May 02, 2019 USD ($) Tranche | Sep. 30, 2019 USD ($)
Debt Instrument [Line Items] |  |
Maximum borrowing capacity | $ 150,000,000 |
Amount funded | $ 30,000,000 |
Number of additional tranches | Tranche | 3 |
Remaining borrowing capacity | $ 120,000,000 |
Interest only payment period | 36 months |
Maturity date | May 01, 2024 |
Percentage of exit fee on amount borrowed on final repayment | 1.75% |
Percentage of exit fee on amount borrowed on partial prepayment | 1.75% |
Debt covenant minimum unrestricted cash percentage | 25.00% |
Minimum indebtedness amount |  | $ 2,500,000
Prepayment Occurs through First Anniversary of Closing Date |  |
Debt Instrument [Line Items] |  |
Percentage of prepayment fee | 3.00% |
First Anniversary of Closing Date through Second Anniversary of Closing Date |  |
Debt Instrument [Line Items] |  |
Percentage of prepayment fee | 2.00% |
Second Anniversary of Closing Date and Prior to May 1, 2024 |  |
Debt Instrument [Line Items] |  |
Percentage of prepayment fee | 1.00% |
LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 6.15% |
Interest rate | 2.00% |
Debt instrument, description of variable rate basis | Each term loan under the Credit Facility bears interest at an annual rate equal to the sum of (i) one-month LIBOR (customarily defined, with a change to prime rate if LIBOR funding becomes unlawful or impractical) plus (ii) 6.15%, subject to a LIBOR floor of 2.00%. |
MidCap Financial Trust |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate |  | 3.00%
Tranche One |  |
Debt Instrument [Line Items] |  |
Remaining borrowing capacity | $ 40,000,000 |
Tranche Two |  |
Debt Instrument [Line Items] |  |
Remaining borrowing capacity | 30,000,000 |
Tranche Three |  |
Debt Instrument [Line Items] |  |
Remaining borrowing capacity | $ 50,000,000 |

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