Dividends (Parenthetical) (Detail) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Dividend Declared [Line Items] | |||
| Effective Date of change in amount of quarterly dividend | Feb. 24, 2016 | ||
| Revised quarterly dividend | $ 0.27 | ||
| Dividends related to outstanding restricted stock units | $ 554 | $ 593 | $ 530 |
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- Definition Dividend Declared [Line Items] No definition available.
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- Definition Amount of dividends accrued on unvested restricted stock units to be paid upon vesting. No definition available.
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- Definition The date on which the company's board of directors raised its quarterly dividend. No definition available.
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- Definition Amount of revised quarterly dividend per common share. No definition available.
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