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Stock-Based Compensation (Regular RSU Activity) (Details) (Time-vested restricted stock units [Member])
12 Months Ended
Dec. 31, 2013
Time-vested restricted stock units [Member]
 
Summary of Regular RSU activity  
Outstanding at beginning of year (number of shares) 91,000
Granted, (number of shares) 57,246
Vested, (number of shares) (33,000)
Outstanding at end of year (number of shares) 58,000