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Unaudited Quarterly Data
12 Months Ended
Dec. 31, 2017
Unaudited Quarterly Data [Abstract]  
Unaudited Quarterly Data [Text Block]
Unaudited Quarterly Data
Summarized quarterly financial data for the years ended December 31, 2017, and 2016 is as follows:
(In thousands, except per share data)
1st Quarter
 
2nd Quarter
 
3rd Quarter
 
4th Quarter
Year Ended December 31, 2017
 
 
 
 
 
 
 
Revenues
$
741,986

 
$
677,635

 
$
643,965

 
$
638,954

Gross profit
462,663

 
432,533

 
412,465

 
410,881

Operating profit (loss)
1,152

 
(873
)
 
(8,445
)
 
(54,893
)
Net (loss) earnings
(6,679
)
 
(8,893
)
 
(12,599
)
 
34,824

Basic (loss) earnings per common share
$
(0.13
)
 
$
(0.17
)
 
$
(0.24
)
 
$
0.65

Diluted (loss) earnings per common share
$
(0.13
)
 
$
(0.17
)
 
$
(0.24
)
 
$
0.65

Cash dividends declared per common share
$
0.08

 
$
0.08

 
$

 
$

(In thousands, except per share data)
1st Quarter
 
2nd Quarter
 
3rd Quarter
 
4th Quarter
Year Ended December 31, 2016
 
 
 
 
 
 
 
Revenues
$
835,652

 
$
749,619

 
$
693,877

 
$
684,104

Gross profit
534,944

 
500,158

 
457,226

 
442,721

Operating profit (loss)
48,430

 
27,550

 
16,700

 
(159,276
)
Net earnings (loss)
25,061

 
9,946

 
6,181

 
(146,383
)
Basic earnings (loss) per common share
$
0.47

 
$
0.19

 
$
0.12

 
$
(2.76
)
Diluted earnings (loss) per common share
$
0.47

 
$
0.19

 
$
0.12

 
$
(2.76
)
Cash dividends declared per common share
$
0.08

 
$
0.08

 
$
0.08

 
$
0.08