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Capital Stock (Narrative) (Q3) (Details) |  |  |  |  | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 02, 2020 Item shares | Jul. 01, 2020 Item shares | Jan. 02, 2020 Item shares | Mar. 17, 2017 $ / shares | Sep. 30, 2020 $ / shares shares | Dec. 31, 2019 $ / shares shares | Dec. 31, 2018 $ / shares shares | Mar. 16, 2017 $ / shares
Capital Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, par value |  |  |  | $ 0.001 | $ 0.001 | $ 0.001 | $ 0.001 |
Preferred stock, shares authorized | shares |  |  |  |  | 25,000,000 | 25,000,000 | 25,000,000 |
Rights Plan [Member] |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |
Number of preferred share purchase right for each outstanding share of its common stock to shareholder |  |  |  | $ 1 |  |  |  |
Common stock, Threshold for exercise of rights percentage |  |  |  | 4.95% |  |  |  |
Date declared |  |  |  |  |  | Mar. 17, 2017 |  |
Date to be paid |  |  |  |  |  | Mar. 27, 2017 |  |
Date of record |  |  |  |  |  | Mar. 16, 2017 |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |
Number of directors | Item | 3 |  |  |  |  |  |  |
Right [Member] |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |
Date declared |  |  |  |  | Mar. 17, 2017 |  |  |
Date to be paid |  |  |  |  | Mar. 27, 2017 |  |  |
Date of record |  |  |  |  | Mar. 16, 2017 |  |  |
Right [Member] | Rights Plan [Member] |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |
Number of preferred share purchase right for each outstanding share of its common stock to shareholder |  |  |  | $ 1 |  |  |  |
Directors, CFO And Interim CEO [Member] |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, New shares issued | shares |  | 6,511 |  |  |  |  |  |
Number of directors | Item |  | 3 |  |  |  |  |  |
Directors, CFO And Interim CEO [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, New shares issued | shares | 4,367 |  | 7,436 |  |  |  |  |
Number of directors | Item |  |  | 3 |  |  |  |  |
Series A Preferred Stock [Member] |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |
Preferred stock, par value |  |  |  |  | $ 0.0001 | $ 0.0001 | $ 0.0001 |
Preferred stock, shares issued | shares |  |  |  |  | 0 | 0 | 0 |
Preferred stock, shares authorized | shares |  |  |  |  | 10,000 | 10,000 | 10,000 |
Dividends conversion ratio |  |  |  |  | 0.001 |  |  |
Exercise price |  |  |  |  |  |  |  | $ 1.10
Series A Preferred Stock [Member] | Rights Plan [Member] |  |  |  |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, par value |  |  |  | $ 0.001 |  |  |  |
Preferred stock, shares issued | shares |  |  |  |  | 0 |  |  |
Dividends conversion ratio |  |  |  |  |  | 1 |  |
Exercise price |  |  |  |  |  |  |  | $ 1.10

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