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Share-Based Compensation-Activity (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Number of Options  
Outstanding at beginning of year 1,924,941
Granted 395,642
Expired/cancelled/forfeited (120,090)
Exercised (308,000)
Outstanding at end of year 1,892,493
Wgtd. Avg. Exercise Price  
Outstanding at beginning of year (usd per share) $ 5.61
Granted (usd per share) $ 4.22
Expired/cancelled/forfeited (usd per share) $ 7.22
Exercised (usd per share) $ 2.81
Outstanding at end of year (usd per share) $ 5.67
Additional Disclosures  
Options exercisable at end of year 1,317,795
Options expected to vest 545,963
Options exercisable at end of year (usd per share) $ 5.99
Options expected to vest (usd per share) $ 4.95
Outstanding, remaining contractual term 5 years 9 months 18 days
Exercisable, remaining contractual term 4 years 3 months 18 days
Vested and expected to vest, remaining contractual term 9 years 1 month 6 days
Outstanding, intrinsic value $ 360
Exercisable, intrinsic value 324
Vested and expected to vest, intrinsic value $ 34