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Net Income (Loss) Per Common Share - Summary of Net Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |  |  |  |
Weighted Average Number of Shares Issued, Basic | 43,034 | 42,746 | 42,980 | 42,696
Income (loss) from continuing operations | $ (3,377) | $ 1,640 | $ (13,681) | $ (124,003)
Less: Preferred stock cumulative dividends and deemed dividends | (2,314) | (3,139) | (19,054) | (9,133)
Numerator for basic income (loss) from continuing operations per common share | (5,691) | (1,499) | (32,735) | (133,136)
Numerator for diluted income (loss) from continuing operations per common share | (5,691) | (1,499) | (32,735) | (133,136)
Income (loss) from discontinued operations, net of tax (Note 2) | 0 | 20,330 | 0 | (123,966)
Numerator for basic undistributed net loss per common share | (5,691) | 18,831 | (32,735) | (257,102)
Numerator for diluted undistributed net loss per common share | $ (5,691) | $ 18,831 | $ (32,735) | $ (257,102)
Weighted Average Number of Shares, Restricted Stock | (476) | (544) | (459) | (526)
Weighted average common shares outstanding, diluted (in shares) | 44,455 | 42,202 | 43,862 | 42,170
Basic loss from continuing operations per common share (in dollars per share) | $ (0.13) | $ (0.04) | $ (0.75) | $ (3.16)
Basic loss from discontinuing operations per common share (in dollars per share) | 0 | 0.49 | 0 | (2.94)
Basic net loss per share (in dollars per share) | (0.13) | 0.45 | (0.75) | (6.10)
Diluted loss from continuing operations per common share (in dollars per share) | (0.13) | (0.04) | (0.75) | (3.16)
Diluted loss from discontinuing operations per common share (in dollars per share) | 0 | 0.49 | 0 | (2.94)
Diluted net loss per share (in dollars per share) | (0.13) | 0.45 | (0.75) | (6.10)
Cash dividends declared per share (in dollars per share) | $ 0 | $ 0 | $ 0 | $ 0
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants | 1,897 | 0 | 1,341 | 0
Weighted Average Number of Shares Outstanding, Basic and Diluted | 44,455 | 42,202 | 43,862 | 42,170

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