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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share



	Three months ended						Nine months ended
	September 30,						September 30,
	2019			2018			2019			2018
Net income	$	98,582		$	38,204		$	277,742		$	144,534
Shares:
Weighted-average number of common shares outstanding		27,775			27,802			27,730			27,844
Dilutive stock awards		613			215			538			123
Diluted weighted-average number of common shares outstanding		28,388			28,017			28,268			27,967
Basic earnings per share	$	3.55		$	1.37		$	10.02		$	5.19
Diluted earnings per share	$	3.47		$	1.36		$	9.83		$	5.17

Stock Awards Excluded from the Calculation of Diluted EPS



	Three months ended						Nine months ended
	September 30,						September 30,
	2019			2018			2019			2018
Stock awards subject to performance conditions		84			108			83			103
Stock awards that were antidilutive		17			1,164			178			1,817
Total stock awards excluded from diluted earnings per share		101			1,272			261			1,920