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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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Earnings Per Share [Abstract] |  |  |  |
Net loss | $ (8,567) | $ (5,391) | $ (11,869) | $ (10,304)
Less: Preferred stock cumulative dividends and deemed dividends | (2,658) | (2,211) | (5,196) | (16,740)
Numerator for basic undistributed net loss per common share | (11,225) | (7,602) | (17,065) | (27,044)
Numerator for diluted undistributed net loss per common share | $ (11,225) | $ (7,602) | $ (17,065) | $ (27,044)
Weighted Average Number of Shares Issued, Basic | 43,885 | 43,067 | 43,599 | 42,952
Weighted Average Number of Shares, Restricted Stock | (1,070) | (524) | (844) | (450)
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants | 1,893 | 1,897 | 1,894 | 1,059
Weighted average common shares outstanding, diluted (in shares) | 44,708 | 44,440 | 44,649 | 43,561
Weighted Average Number of Shares Outstanding, Basic and Diluted | 44,708 | 44,440 | 44,649 | 43,561
Basic net loss per share (in dollars per share) | $ (0.25) | $ (0.17) | $ (0.38) | $ (0.62)
Diluted net loss per share (in dollars per share) | (0.25) | (0.17) | (0.38) | (0.62)
Basic and diluted net loss per common share | (0.25) | (0.17) | (0.38) | (0.62)
Cash dividends declared per share (in dollars per share) | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Number of shares of restricted stock determined by relating the portion of time within a reporting period that restricted shares have been outstanding to the total time in that period. Restricted shares are subject to sales, contractual, regulatory or other restrictions that prevent or inhibit the holder from freely disposing of them before the restriction ends. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2646-109256 + Details
Name: | us-gaap_WeightedAverageNumberOfSharesRestrictedStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration