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REDEEMABLE PREFERRED STOCK - Series A Preferred Stock Narrative (Details) - USD ($) |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 48 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 15, 2021 | Dec. 15, 2020 | Nov. 16, 2020 | Sep. 02, 2020 | Feb. 29, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock redemption, trading days prior to redemption |  |  |  |  | 20 days |  |  |  |  |  |  | 20 days |  |
Redeemable preferred stock dividends |  |  |  |  |  | $ 87,000 |  |  | $ 0 |  |  | $ 300,000 | $ 0 |
Reclassification of Series A Preferred Stock from temporary equity to permanent equity |  |  |  |  |  | $ 10,747,000 | $ 9,739,000 | $ 6,948,000 | $ 7,014,000 | $ 10,825,000 | $ 8,890,000 | $ 27,434,000 | $ 26,729,000 | $ 92,387,000
Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant right to purchase a share of common stock (in shares) |  |  |  |  |  | 0.25 |  |  |  |  |  | 0.25 |  | 0.25
Series A Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative dividend rate |  |  |  |  |  |  |  |  |  |  |  | 5.50% |  |
Preferred dividend per share per quarter (in usd per share) |  |  |  |  |  |  |  |  |  |  |  | $ 0.34375 |  |
Preferred dividends declared (in usd per share) |  |  |  | $ 0.34375 |  |  |  |  |  |  |  |  |  |
Preferred dividends paid, per share amount (in usd per share) |  |  |  |  |  | $ 0.34375 | $ 0.34375 | $ 0.68750 | $ 0.34375 | $ 0.34375 | $ 0.34375 |  |  |
Series A Preferred Stock | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred dividends paid, per share amount (in usd per share) | $ 0.114583 | $ 0.114583 | $ 0.114583 |  |  |  |  |  |  |  |  |  |  |
Series A Preferred Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in usd per share) |  |  |  |  |  | 0.001 |  |  |  |  |  | 0.001 |  | $ 0.001
Preferred stock, stated value (in usd per share) |  |  |  |  |  | $ 25.00 |  |  |  |  |  | $ 25.00 |  | $ 25.00

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- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
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- Definition The difference between the carrying amount of a financial instrument subject to a registration payment arrangement recorded as temporary equity prior to adoption of FSP EITF 00-19-2 and the carrying amount reclassified to permanent equity upon the adoption of FSP EITF 00-19-2. Recorded as a cumulative effect adjustment to the beginning balance of retained earnings. Does not apply to registration payment arrangements that are no longer outstanding upon adoption of FSP EITF 00-19-2. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=120519210&loc=d3e90193-114008 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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- Definition Dividends paid to preferred stock holders that is redeemable solely at the option of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1377-109256 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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- Definition The per share liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References No definition available. + Details
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