Statement Of Shareholders Equity [Line Items]

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- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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- Definition

Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Stockholder's Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Statement Of Shareholders Equity [Line Items]
Effective portion of unrealized (loss) gain on derivative instruments	$ (3,180)		$ (431)
Share repurchase, amount		$ 24,640
2018 Stock Repurchase Plan [Member]
Statement Of Shareholders Equity [Line Items]
Common Stock Repurchase, Shares		413
Share repurchase, amount		$ 24,600
Share repurchase, price per share		$ 59.70
2018 Stock Repurchase Plan [Member] \| Board of Directors [Member]
Statement Of Shareholders Equity [Line Items]
Stock repurchase program expiration date	Feb. 28, 2020