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Shareholders' Equity (Narrative) (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Shareholders’ Equity [Abstract]
Stock repurchase program, authorized amount	$ 2,500,000
Stock repurchase program, additional authorized amount	100,000
Value of common shares remaining to be repurchased	$ 57,551

X

- Definition

Stock repurchase program, additional authorized amount

+ References

No definition available.

+ Details

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X

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

+ Details

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- References

No definition available.

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