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Debt - Term Loans (Narrative) (Details) - USD ($) |  |  |  |  | 3 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 28, 2020 | Oct. 27, 2020 | Oct. 20, 2020 | Apr. 24, 2020 | Mar. 31, 2021 | Mar. 31, 2020
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount advanced |  |  |  |  | $ 688,000 | $ 1,125,000
Loans Payable | Wells Fargo term loans payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount |  | $ 18,500,000 |  |  |  |
Weighted average interest rate |  |  |  |  | 3.77% |
Monthly installments |  | $ 200,000 |  |  |  |
Loans Payable | Wells Fargo term loans payable | Keybank National Association |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount advanced | $ 16,790,000 |  |  |  |  |
Loans Payable | Wells Fargo term loans payable | LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis points |  | 3.00% |  |  |  |
Stated interest rate |  | 0.75% |  |  |  |
Loans Payable | Wells Fargo term loans payable | LIBOR | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis points |  | 1.00% |  |  |  |
Loans Payable | Wells Fargo term loans payable | Base Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis points |  | 2.00% |  |  |  |
Stated interest rate |  | 1.00% |  |  |  |
Loans Payable | Wells Fargo term loans payable | Federal Funds Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis points |  | 0.50% |  |  |  |
Loans Payable | FGI term loans payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount |  |  | $ 13,200,000 |  |  |
Stated interest rate |  |  | 8.25% |  |  |
Security deposit |  | $ 1,200,000 |  |  |  |
Final payment |  |  | $ 1,446,000 |  |  |
Prepayment fee |  |  | 20.00% |  |  |
Loans Payable | FGI term loans payable | Period One |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Monthly installments |  |  | $ 117,000 |  |  |
Debt term |  |  | 12 months |  |  |
Prepayment fee |  |  | 4.00% |  |  |
Loans Payable | FGI term loans payable | Period Two |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Monthly installments |  |  | $ 246,000 |  |  |
Debt term |  |  | 59 months |  |  |
Prepayment fee |  |  | 3.00% |  |  |
Loans Payable | FGI term loans payable | Period Three |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Prepayment fee |  |  | 2.00% |  |  |
Loans Payable | FGI term loans payable | Period Four |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Prepayment fee |  |  | 1.00% |  |  |
Loans Payable | FGI term loans payable | Keybank National Association |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount advanced |  | $ 12,000,000 |  |  |  |
Loans Payable | Leaf Capital term loan payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount |  |  |  | $ 175,000 |  |
Stated interest rate |  |  |  | 5.50% |  |
Debt term |  |  |  | 60 months |  |

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