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Related-Party Transactions - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2013 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Related Party Transactions [Abstract] |  |  |  |  |  |  |
Maximum annual management fee |  |  |  |  | 2.00% |  |
Reimbursement for overhead expenses |  |  |  |  | 2.00% |  |
Amount of payroll and benefits reimbursed |  |  |  |  | 2.00% |  |
Overhead expense reimbursements limitation period |  |  |  |  | 1 year |  |
Annual base management fee, in percentage of stockholders' equity, in excess of recorded value of preferred stock |  |  |  |  |  |  | 1.00%
Expected annual base management fee |  |  |  |  |  | 2.00% |
Pre-incentive quarterly fee FFO in percentage of common stockholders equity that will reward the advisor |  |  |  |  | 1.75% |  |
Pre-incentive annual fee FFO in percentage of common stockholders equity that will reward the advisor |  |  |  |  | 7.00% |  |
Amount to be paid to Adviser in percentage of pre-incentive fee condition one |  |  |  |  | 100.00% |  |
Pre-incentive fee in percentage of common stockholders equity that awards adviser hundred percent of amount of pre-incentive fee, maximum percentage |  |  |  |  | 2.1875% |  |
Maximum annual percentage of stockholders' equity to pay full pre-incentive fee to adviser |  |  |  |  | 8.75% |  |
Amount to be paid to Adviser in percentage of pre-incentive fee condition two |  |  |  |  | 20.00% |  |
Pre-incentive fee in percentage of common stockholders' equity that awards the adviser 20% of the amount of the pre-incentive fee, minimum percentage |  |  |  |  | 2.1875% |  |
Net Incentive fee paid to Adviser | $ 41,037 | $ 41,037 |  |  | $ 0 | $ 0 |
Increase in percentage of fee paid to administrator |  |  | 135.00% | 137.00% |  |  |

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- Definition Amount to be paid to adviser in percentage of pre incentive fee condition one. + References No definition available. + Details
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- Definition Amount to be paid to adviser in percentage of pre incentive fee condition two. + References No definition available. + Details
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- Definition Annual base management fee in percentage of stockholders equity in excess of recorded value of preferred stock. + References No definition available. + Details
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- Definition Annualized incentive fee per advisory agreement. + References No definition available. + Details
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- Definition Incentive fee per advisory agreement. + References No definition available. + Details
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- Definition Increase decrease in percentage of administrative fee. + References No definition available. + Details
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- Definition Maximum annual percentage of stockholders equity to pay full pre incentive fee to adviser. + References No definition available. + Details
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- Definition Maximum management advisory fee as percentage of average invested assets. + References No definition available. + Details
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- Definition Maximum overhead expenses as percentage of average invested assets. + References No definition available. + Details
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- Definition Maximum payroll and benefits reimbursed as percentage of average invested assets. + References No definition available. + Details
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- Definition Overhead expense reimbursements limitation period. + References No definition available. + Details
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- Definition Percentage of expected annual base management fee to aggregate stockholders equity. + References No definition available. + Details
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- Definition Pre incentive fee in percentage of common stockholders equity that awards adviser hundred percent of amount of pre incentive fee maximum percentage. + References No definition available. + Details
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- Definition Pre incentive fee in percentage of common stockholders equity that awards adviser twenty percent of amount of pre incentive fee minimum percentage. + References No definition available. + Details
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- Definition Related party transaction incentive fee. + References No definition available. + Details
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- References No definition available. + Details
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