New accounting standards ASU 2018-02 (Details 3) - Adjustments for new accounting principle, early adoption $ in Thousands	9 Months Ended
Sep. 30, 2018 USD ($)
Retained Earnings Adjustments [Line Items]
Reclassification of certain prior period tax effects from accumulated other comprehensive loss	$ 0
Tax Cuts and Jobs Act
Retained Earnings Adjustments [Line Items]
Reclassification of certain prior period tax effects from accumulated other comprehensive loss	$ 7,900

Amount of the related income tax effect of a cumulative effect on retained earnings.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794

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