Debt and Credit Facilities - Margin for Borrowings under Revolving Credit Facility (Details) - Revolving Credit Facility - USD ($)	May 11, 2020	Sep. 18, 2019	Sep. 30, 2020
Minimum | Risk Level, High
Line of Credit Facility [Line Items]
Availability of borrowing			$ 30,000,000
Minimum | Risk Level, Medium
Line of Credit Facility [Line Items]
Availability of borrowing			$ 15,000,000
Base Rate
Line of Credit Facility [Line Items]
Basis spread (as a percent)	9.50%
Base Rate | Minimum
Line of Credit Facility [Line Items]
Basis spread (as a percent)	1.00%	1.00%
LIBOR
Line of Credit Facility [Line Items]
Basis spread (as a percent)	10.50%
Tranche A | Base Rate | Risk Level, High
Line of Credit Facility [Line Items]
Basis spread (as a percent)	1.00%
Tranche A | Base Rate | Risk Level, Medium
Line of Credit Facility [Line Items]
Basis spread (as a percent)	1.25%
Tranche A | Base Rate | Risk Level, Low
Line of Credit Facility [Line Items]
Basis spread (as a percent)	1.50%
Tranche A | LIBOR | Risk Level, High
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.00%
Tranche A | LIBOR | Risk Level, Medium
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.25%
Tranche A | LIBOR | Risk Level, Low
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.50%
Tranche B | Base Rate | Risk Level, High
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.00%
Tranche B | Base Rate | Risk Level, Medium
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.25%
Tranche B | Base Rate | Risk Level, Low
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.50%
Tranche B | LIBOR | Risk Level, High
Line of Credit Facility [Line Items]
Basis spread (as a percent)	3.00%
Tranche B | LIBOR | Risk Level, Medium
Line of Credit Facility [Line Items]
Basis spread (as a percent)	3.25%
Tranche B | LIBOR | Risk Level, Low
Line of Credit Facility [Line Items]
Basis spread (as a percent)	3.50%