Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

	Revenues		Gross Profit		Net Income (Loss)		Net Income Per Share— Basic(1)		Net Income Per Share— Diluted(1)
	(In thousands, except per share amounts)
2019
1st Quarter	$	237,182	$	102,571	$	31,643	$	1.76	$	1.73
2nd Quarter	228,080		94,855		21,390		1.20		1.18
3rd Quarter	217,405		89,720		23,917		1.38		1.36
4th Quarter	227,511		95,668		27,396		1.61		1.59
2018
1st Quarter	$	188,163	$	83,500	$	17,073	$	0.93	$	0.92
2nd Quarter	184,471		78,590		12,713		0.70		0.69
3rd Quarter	194,099		92,626		23,587		1.31		1.29
4th Quarter	214,198		98,371		26,981		1.49		1.47

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⁽¹⁾ The quarterly amounts of earnings per share may not add to the full year amount as each quarterly calculation is discrete from the full-year calculation.