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Accounting Policy (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)
Description Of Business And Summary Of Significant Accounting Policies [Abstract]
Excess tax benefit (deficiency) on stock based compensation recognized in provision for income taxes	$ 448

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- Definition

Excess tax benefit or deficiency recorded to the provision for income taxes in the consolidated statement of income, instead of additional paid-in capital in the consolidated statement of income. Additionally, excess tax benefits will be classified as operating activities in in the consolidated statement of cash flow.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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