Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Tax benefit resulting from exercised or vested awards as discrete items	$ 355	$ 2,000

Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration