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v3.19.1

Related-Party Arrangements - Additional Information (Detail) |  | 3 Months Ended |
--- | --- | --- | ---
Mar. 11, 2018 USD ($) $ / shares shares | Mar. 31, 2019 USD ($) $ / shares shares | Mar. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) $ / shares shares
Related Party Transaction [Line Items] |  |  |  |
Principal amount |  | $ 101,700,000 |  |
Loss on extinguishment of debt |  |  | $ 825,000 |
Common stock, shares issued | shares |  | 187,778,236 |  | 187,029,967
Common stock, par value | $ / shares |  | $ 0.01 |  | $ 0.01
The Mann Group LLC |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Loss on extinguishment of debt |  |  | $ 800,000 |
Unamortized premium |  |  |  | $ 800,000
Debt issuance costs |  |  |  | 100,000
The Mann Group LLC | Amended and Restated Loan Arrangement |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Principal amount | $ 71,500,000 |  |  |
Maturity date | Jul. 01, 2021 |  |  |
No of convertible shares | 250 |  |  |
Principal amount per share | $ / shares | $ 1,000 |  |  |
Conversion price of shares | $ / shares | $ 4.00 |  |  |
The Mann Group LLC | Loan Arrangement |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Common stock, shares issued | shares | 3,000,000 |  |  |
Common stock, par value | $ / shares | $ 2.72 |  |  |
Principal balance cancelled amount | $ 8,200,000 |  |  |
Fixed borrowing rate |  | 5.84% |  |
Related party transaction prepayment period |  | 90 days |  |
Aggregate principal amount cancelled |  | $ 105,000,000 |  |
Accrued interest of related party debt |  | 8,000,000 |  | 6,800,000
Amount available for future borrowings |  | 0 |  | 0
The Mann Group LLC | Loan Arrangement | Maximum |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount prepaid for cancellation of indebtedness |  | $ 200,000,000 |  |
The Mann Group LLC | Loan Arrangement | Minimum |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Number of months advances outstanding |  | 12 months |  |
Related Party Debt |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Principal amount |  | $ 71,506,000 |  | 71,506,000
Unamortized premium |  | 581,000 |  | 639,000
Debt issuance costs |  | $ 51,000 |  | $ 56,000
Related Party Debt | Letter Agreement |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Description of variable rate interest |  | the interest rate will increase to the one-year LIBOR calculated on the date of the initial advance or in effect on the date of default, whichever is greater, plus 5% per annum. |  |
Related Party Debt | Letter Agreement | LIBOR |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Interest rate (LIBOR) |  | 5.00% |  |

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