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Stock Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2013
Stock Based Compensation  
Summary of stock-based compensation expense

 

 

 
   Year Ended
December 31,		  
 
   2013   2012   2011  
 
   (in thousands)
  

Restricted stock/unit awards ("RSA")

   $ 363   $ 421   $ 553  

Performance share incentives ("PSI")

     258     241     191  

Stock options

     —     —     32  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

   $ 621   $ 662   $ 776  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
               
Restricted stock/units awards
  
Stock-based compensation  
Stock award activity

 

 

 
   Year Ended December 31,  
 
   2013   2012   2011  

RSAs outstanding at beginning of period

     212,340     264,640     247,840  

Awarded

     45,375     70,500     63,800  

Vested

     (91,840 )   (111,300 )   (42,000 )

Cancelled or forfeited

     —     (11,500 )   (5,000 )
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

RSAs outstanding at end of period

     165,875     212,340     264,640  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
               

Unamortized deferred compensation cost (in millions)

   $ 1.2   $ 0.9   $ 0.9  
Performance share incentives
  
Stock-based compensation  
Stock award activity

 

 

 
   Year Ended December 31,  
 
   2013   2012   2011  

PSIs outstanding at beginning of period

     102,500     54,000     —  

Awarded

     3,375     52,500     54,000  

Cancelled or forfeited

     —     (4,000 )   —  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

PSIs outstanding at end of period

     105,875     102,500     54,000  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​