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New Accounting Pronouncements (Details) - Accounting Standards Update 2018-02 $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification from AOCI to retained earnings	$ (1,772)
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification from AOCI to retained earnings	$ 1,772

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- Definition

Tax Cuts And Jobs Act Of 2017, Reclassification From AOCI To Retained Earnings

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