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Net Income per Share
 3 Months Ended
Mar. 31, 2019
Net Income (Loss) per Share [Abstract]  
Earnings Per Share [Text Block]
Net Income per Share

Net income per share was determined by dividing adjusted net income to shareholders by the applicable weighted average shares outstanding. Diluted net income per share is computed by dividing adjusted net income to shareholders by the weighted average number of common shares and dilutive potential common shares outstanding during the period.
 
Three Months Ended March 31,
(in thousands, except per share amounts)
2019
 
2018
Net income (loss) to shareholders
$
576,427

 
$
(64,306
)
Adjustment of redeemable noncontrolling interests
18,361

 
5,051

Adjusted net income (loss) to shareholders
$
594,788

 
$
(59,255
)
 
 
 
 
Basic common shares outstanding
13,895

 
13,932

Dilutive potential common shares from restricted stock units and restricted stock
16

 
—

Diluted shares outstanding
13,911

 
13,932

Basic net income (loss) per share
$
42.81

 
$
(4.25
)
Diluted net income (loss) per share (1)
$
42.76

 
$
(4.25
)

(1) 
The impact of restricted stock units and restricted stock of 27 thousand shares was excluded from the computation of diluted earnings per share for the three months ended March 31, 2018 because the effect would have been anti-dilutive.