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EARNINGS PER SHARE (Details) - USD ($)
$ / shares in Units, $ in Thousands

3 Months Ended

12 Months Ended

Dec. 31, 2018

Dec. 31, 2017

Sep. 30, 2018

Earnings Per Share [Abstract]

Net income, as reported

$ 86,248

$ 123,699

Basic earnings per share

Weighted average shares of common stock outstanding-basic (shares)

88,547,000

86,996,000

Basic earnings per common share (usd per share)

$ 0.97

$ 1.42

Diluted earnings per share

Weighted average shares of common stock outstanding-basic (shares)

88,547,000

86,996,000

Incremental shares (shares)

^[1]

399,000

351,000

Weighted average shares of common stock outstanding-diluted (shares)

88,946,000

87,347,000

Diluted earnings per common share (usd per share)

^[2]

$ 0.97

$ 1.42

Anti-dilutive shares excluded from the calculation of diluted earnings per share

0

0

[1]	Incremental shares consist primarily of unvested stock awards and performance shares.
[2]	There were no anti-dilutive shares excluded from the calculation of diluted earnings per share for fiscal 2019 and 2018.

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