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Consolidated Balance Sheets (Parenthetical) $ in Thousands | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Aug. 24, 2021 shares | Jun. 23, 2021 USD ($) | Dec. 31, 2020 shares | [1] | Dec. 31, 2019 shares | Dec. 31, 2018 shares
Cost/Amortized Cost |  | $ 652,217 |  | $ 605,365 |  |  |  |  |  |
Common stock, par value | $ / shares |  | $ 0.01 |  | $ 0.01 |  |  |  |  |  |
Common stock, authorized | shares |  | 20,000,000 |  | 20,000,000 |  | 20,000,000 |  |  |  |
Common stock, issued | shares |  | 9,916,856 |  | 9,867,998 |  |  |  |  |  |
Common stock, outstanding | shares | [2] | 9,581,536 | [1] | 9,699,695 | [1] |  |  | 7,516,423 | 4,482,968 | 3,732,685
Derivative liabilities, cost |  |  |  | $ 31 |  |  |  |  |  |
Reverse stock split |  | 0.10 |  |  |  |  |  |  |  |
Non-controlled/Non-affiliated Investments |  |  |  |  |  |  |  |  |  |
Cost/Amortized Cost |  | $ 518,699 |  | 479,153 |  |  |  |  |  |
Non-controlled Affiliated Investments |  |  |  |  |  |  |  |  |  |
Cost/Amortized Cost |  | 75,196 |  | 74,082 |  |  |  |  |  |
Controlled Affiliated Investments |  |  |  |  |  |  |  |  |  |
Cost/Amortized Cost |  | 58,322 |  | 52,130 |  |  |  |  |  |
Great Lakes Portman Ridge Funding LLC Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Deferred financing costs, net |  | 1,107 |  | 732 |  |  |  |  |  |
2018-2 Secured Notes |  |  |  |  |  |  |  |  |  |
Debt instruments, net of discount |  | 1,226 |  | 1,403 |  |  |  |  |  |
4.875% Notes Due 2026 |  |  |  |  |  |  |  |  |  |
Debt instruments, net of discount |  | 1,704 |  | 2,157 |  |  | $ 2,430 |  |  |
Deferred financing costs, net |  | $ 818 |  | $ 951 |  |  |  |  |  |
[1] | The Company completed a Reverse Stock Split of 10 to 1 effective August 26, 2021, the common shares outstanding and net asset value per common share values have been adjusted retroactively to reflect the split for all periods presented
[2] | Totals may not sum due to rounding.

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