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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)
In Thousands, except Share data, unless otherwise specified
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
BALANCE at Dec. 31, 2012 $ 103,308 $ 14 $ 373,605 $ (270,311)
BALANCE (in shares) at Dec. 31, 2012   14,197,792    
Increase (Decrease) in Stockholders' Equity        
Stock issued for restricted stock 1 1    
Stock issued for restricted stock (in shares)   258,284    
Stock issued under stock option plans 18   18  
Stock issued under stock option plans (in shares)   5,400    
Stock issued under defined contribution 401(k) retirement savings plan 681   681  
Stock issued under defined contribution 401(k) retirement savings plan (in shares)   166,514    
Share-based compensation 1,821   1,821  
Net loss (10,499)     (10,499)
BALANCE at Dec. 31, 2013 95,330 15 376,125 (280,810)
BALANCE (in shares) at Dec. 31, 2013 14,627,990 14,627,990    
Increase (Decrease) in Stockholders' Equity        
Stock issued for restricted stock (in shares)   50,921    
Stock issued under defined contribution 401(k) retirement savings plan (163)   163  
Stock issued under defined contribution 401(k) retirement savings plan (in shares)   17,246    
Share-based compensation 223   223  
Net loss (1,043)     (1,043)
BALANCE at Mar. 31, 2014 $ 94,673 $ 15 $ 376,511 $ (281,853)
BALANCE (in shares) at Mar. 31, 2014 14,696,157 14,696,157