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Stockholders' Equity and Stock Incentive Plans (Share Repurchase Program) (Details) $ in Millions	Dec. 31, 2016 USD ($)
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock repurchase program, authorized amount	$ 100.0
Stock repurchase program, remaining authorized repurchase amount	$ 92.1

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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