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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Inventories [Table Text Block]
Inventories included the following (work in process is not material):
 
 
 
December 31,
2016
 
December 31,
2015
 
 
(thousands)
Finished goods and work in process
 
$
330,026

 
$
292,826

Logs
 
63,208

 
58,299

Other raw materials and supplies
 
40,217

 
33,732

 
 
$
433,451

 
$
384,857

Property and Equipment [Table Text Block]
Property and equipment consisted of the following asset classes with the following general range of estimated useful lives:
 
 
 
December 31,
2016
 
December 31,
2015
 
General Range of Estimated Useful Lives in Years
 
 
(thousands)
 
 
 
 
Land
 
$
38,700

 
$
36,876

 
 
 
 
Buildings
 
136,087

 
106,269

 
20

-
40
Improvements
 
50,655

 
46,205

 
10

-
15
Mobile equipment, information technology, and office furniture
 
125,486

 
109,702

 
3

-
7
Machinery and equipment
 
613,060

 
437,433

 
7

-
12
Construction in progress
 
34,877

 
34,661

 
 
 
 
 
 
998,865

 
771,146

 
 
 
 
Less accumulated depreciation
 
(430,163
)
 
(368,480
)
 
 
 
 
 
 
$
568,702

 
$
402,666