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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Nonvested Share Activity [Table Text Block]
The following summarizes the activity of our PSUs and RSUs awarded under our incentive plans for the year ended December 31, 2017:
 
 
PSUs
 
RSUs
 
 
Number of shares
 
Weighted Average Grant-Date Fair Value
 
Number of shares
 
Weighted Average Grant-Date Fair Value
Outstanding, December 31, 2016
 
448,500

 
$
18.16

 
387,287

 
$
19.73

Granted
 
178,021

 
27.05

 
214,035

 
27.10

Performance condition adjustment (a)
 
5,175

 
16.56

 
—

 
—

Vested
 
(118,138
)
 
20.44

 
(182,489
)
 
20.79

Forfeited (b)
 
(26,398
)
 
19.63

 
(15,581
)
 
22.41

Outstanding, December 31, 2017
 
487,160

 
$
20.76

 
$
403,252

 
$
23.06


__________________ 

(a)
Amount represents additional PSU's earned during the year ended December 31, 2017, based on the performance condition adjustment, as other employees earned 104% of the target based Boise Cascade's 2016 EBITDA.
(b)
Total PSUs forfeited during the year ended December 31, 2017, includes 8,457 shares related to the performance condition adjustment, as officers earned 97% of the target based on Boise Cascade’s 2016 ROIC.

Stock-based compensation expense recognized [Table Text Block]
 
Year Ended December 31
 
2017
 
2016
 
2015
 
(thousands)
PSUs
$
4,923

 
$
4,114

 
$
2,295

RSUs
4,807

 
3,982

 
2,995

Stock options
—

 
81

 
535

Total
$
9,730

 
$
8,177

 
$
5,825