v3.7.0.1

Equity, Dividends and Change in Accumulated Other Comprehensive Loss - Additional Information (Detail) |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 15, 2015 | Dec. 12, 2014 USD ($) shares | Nov. 18, 2014 shares | Aug. 04, 2014 shares | May 02, 2014 USD ($) | Dec. 31, 2016 USD ($) $ / shares shares | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($) | Feb. 24, 2016 USD ($)
Equity Note [Line Items] |  |  |  |  |  |  |  |  |
Common Stock, shares issued | shares |  |  |  | 13,400,000 |  |  |  |  |
Stock Split ratio |  |  | 5 |  |  |  |  |  |
Common stock, shares outstanding | shares |  |  | 67,100,000 |  |  | 67,600,000 | 67,900,000 |  |
Common stock, shares authorized | shares |  |  | 400,000,000 |  |  | 400,000,000 | 400,000,000 |  |
Offering related costs |  |  |  |  |  |  | $ 100,000 | $ 5,600,000 |
Ownership Percentage of the outstanding common stock |  |  |  |  |  | 100.00% |  |  |
Dividends, common stock |  |  |  |  |  | $ 25,400,000 | 18,500,000 |  |
Accrued dividends on unvested restricted shares |  |  |  |  |  | 600,000 |  |  |
Cash dividends |  |  |  |  |  | $ 25,100,000 | $ 18,200,000 | $ 111,300,000 |
Common stock number of shares repurchased | shares |  |  |  |  |  | 1,898,261 |  |  |
Shares repurchased, average purchase price per share | $ / shares |  |  |  |  |  | $ 15.56 |  |  |
Maximum |  |  |  |  |  |  |  |  |
Equity Note [Line Items] |  |  |  |  |  |  |  |  |
Share repurchase program authorized amount |  |  |  |  |  |  |  |  | $ 35,000,000
ASP HHI Holdings, Inc [Member] |  |  |  |  |  |  |  |  |
Equity Note [Line Items] |  |  |  |  |  |  |  |  |
Cash dividends |  |  |  |  | $ 111,300,000 |  |  |  |
IPO [Member] |  |  |  |  |  |  |  |  |
Equity Note [Line Items] |  |  |  |  |  |  |  |  |
Shares issued under IPO | shares |  | 10,000,000 |  |  |  |  |  |  |
Offering related costs |  | $ 5,600,000 |  |  |  |  |  |  |
American Security [Member] |  |  |  |  |  |  |  |  |
Equity Note [Line Items] |  |  |  |  |  |  |  |  |
Ownership Percentage of the outstanding common stock | 78.50% |  |  |  |  |  |  |  |

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