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Mandatorily Redeemable Series A Preferred Stock - Summary of Series A Redeemable Preferred Stock (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items] |  |
Beginning Balance | $ 34,708 |
Ending Balance |  | $ 34,708
Mandatorily Redeemable Series A Preferred Stock |  |
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items] |  |
Beginning Balance | 34,708 | 29,059
Accumulated dividends | 4,776 | 4,865
Net accretion of issuance & transaction costs | 845 | 784
Payoff of Series A Preferred Stock | $ (40,329) |
Ending Balance |  | $ 34,708

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The amount that is required to be paid, determined under the conditions specified in the contract, if as of the reporting date, the holder of the share has exercised the right to or the shares are mandatorily redeemable within one year of the reporting date or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879 + Details
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- Definition Redemption of temporary equity as the result of a triggering event associated with the temporary equity. + References No definition available. + Details
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