Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Income and Retained Earnings (Unaudited) (Parenthetical)

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Condensed Consolidated Statements of Income and Retained Earnings (Unaudited) (Parenthetical)
$ in Thousands
3 Months Ended
Jun. 30, 2018
USD ($)
Income Statement [Abstract]  
Cumulative effect of change in accounting principle income tax benefit $ 301