Stock-Based Compensation (Restricted Stock and Restricted Stock Units Activity) (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
Sep. 30, 2023
Shares
Non-vested Ending balance (in shares)	33,332
Restricted stock
Shares
Non-vested Beginning balance (in shares)	13,446
Granted (in shares)	0
Vested (in shares)	0
Forfeited/Expired (in shares)	0
Non-vested Ending balance (in shares)	13,446
Weighted Average Grant-Date Fair Value Per Share
Outstanding at Beginning balance (in dollars per share)	$ 64.40
Granted (in dollars per share)	0
Vested and converted (in dollars per share)	0
Forfeited/Expired (in dollars per share)	0
Outstanding at Ending balance (in dollars per share)	$ 64.40
Unrecognized compensation costs	$ 0.1
Restricted Stock Units (RSUs)
Shares
Non-vested Beginning balance (in shares)	1,555,542
Granted (in shares)	272,736
Vested (in shares)	464,649
Forfeited/Expired (in shares)	(143,641)
Non-vested Ending balance (in shares)	1,219,988
Weighted Average Grant-Date Fair Value Per Share
Outstanding at Beginning balance (in dollars per share)	$ 4.22
Granted (in dollars per share)	4.00
Vested and converted (in dollars per share)	4.36
Forfeited/Expired (in dollars per share)	4.16
Outstanding at Ending balance (in dollars per share)	$ 4.13
Unrecognized compensation costs	$ 3.4
Performance-based RSUs
Shares
Non-vested Beginning balance (in shares)	10,743
Granted (in shares)	299,411
Vested (in shares)	6,442
Forfeited/Expired (in shares)	(4,301)
Non-vested Ending balance (in shares)	299,411
Weighted Average Grant-Date Fair Value Per Share
Outstanding at Beginning balance (in dollars per share)	$ 12.42
Granted (in dollars per share)	4.47
Vested and converted (in dollars per share)	12.42
Forfeited/Expired (in dollars per share)	12.42
Outstanding at Ending balance (in dollars per share)	$ 4.47
Unrecognized compensation costs	$ 0.3

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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