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Summary of Series B Preferred Stock and Accretion of Dividends (Detail) shares in Thousands, $ in Thousands | 3 Months Ended
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Mar. 31, 2019 USD ($) shares
Stockholders Equity [Line Items] |
Cumulative dividends on Series B preferred stock | $ 258
Series B Preferred Stock |
Stockholders Equity [Line Items] |
Balance at December 31, 2018 | 20,833
Cumulative dividends on Series B preferred stock | 258
Balance at March 31, 2019 | $ 21,091
Balance at December 31, 2018, Shares | shares | 5,208
Cumulative dividends on Series B preferred stock, Shares | shares | 64
Balance at March 31, 2019, Shares | shares | 5,272
Series B Preferred Stock | Tranche One |
Stockholders Equity [Line Items] |
Balance at December 31, 2018 | $ 12,600
Cumulative dividends on Series B preferred stock | 158
Balance at March 31, 2019 | $ 12,758
Balance at December 31, 2018, Shares | shares | 3,150
Cumulative dividends on Series B preferred stock, Shares | shares | 39
Balance at March 31, 2019, Shares | shares | 3,189
Series B Preferred Stock | Tranche Two |
Stockholders Equity [Line Items] |
Balance at December 31, 2018 | $ 8,233
Cumulative dividends on Series B preferred stock | 100
Balance at March 31, 2019 | $ 8,333
Balance at December 31, 2018, Shares | shares | 2,058
Cumulative dividends on Series B preferred stock, Shares | shares | 25
Balance at March 31, 2019, Shares | shares | 2,083

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- Definition Value of all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by shareholders, which is net of related treasury stock. May be all or a portion of the number of preferred shares authorized. These shares represent the ownership interest of the preferred shareholders. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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