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Revised Financial Statements (Tables)
12 Months Ended
Dec. 31, 2015
Accounting Changes and Error Corrections [Abstract]  
Schedule of Error Corrections and Prior Period Adjustments
Consolidated Balance Sheet
 
 
 
 
 
 
(Thousands)
 
Dec. 31, 2014
 
 
Previously Reported
 
Revision Adjustment
 
As Revised
Long-term deferred income taxes (asset)

 
$
17,722

 
$
269

 
$
17,991

Deferred income taxes (liability)
 
617

 
(617
)
 

Common stock
 
202,104

 
2,530

 
204,634

Retained earnings
 
476,277

 
(1,644
)
 
474,633


Consolidated Statement of Income
 
 
 
 
 
 
 
 
 
 
 
 
(Thousands, except per share amounts)
 
2014
 
2013
Selected Items
 
Previously Reported
 
Revision Adjustment
 
As Revised
 
Previously Reported
 
Revision Adjustment
 
As Revised
Selling, general, and administrative expense
 
$
137,118

 
$
(631
)
 
$
136,487

 
$
133,253

 
$
(777
)
 
$
132,476

Income tax expense
 
12,449

 
221

 
12,670

 
4,088

 
272

 
4,360

Net income
 
41,721

 
410

 
42,131

 
19,707

 
505

 
20,212

 
 
 
 
 
 
 
 
 
 
 
 
 
Basic earnings per share:
 
 
 
 
 
 
 
 
 
 
 
 
Net income per share of common stock
 
$
2.04

 
$
0.02

 
$
2.06

 
$
0.96

 
$
0.02

 
$
0.98

Diluted earnings per share:
 
 
 
 
 
 
 
 
 
 
 
 
Net income per share of common stock
 
$
2.00

 
$
0.02

 
$
2.02

 
$
0.94

 
$
0.03

 
$
0.97