Unaudited Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018
Repurchase of treasury shares, shares	5,615,874
Accumulated Other Comprehensive Income (Loss) [Member]
Unrealized loss on derivatives, tax (benefit) expense	$ (1,055)	$ (744)	$ 918	$ 2,774

Number of shares that have been repurchased during the period and are being held in treasury.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Balance Type:	na
Period Type:	duration