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Retirement Plan (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended 12 Months Ended
Dec. 31, 2010
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Retirement Plan [Abstract]        
401(k) Plan-related expense   $ 0.8 $ 0.8 $ 0.5
Percentage of gross wages as each employee participating contribution (in hundredths)   6.00%    
Percentage of gross wages set aside for matching contribution (in hundredths) 25.00% 50.00%    
Percentage of employers matching contributions vests after two years of credited service (in hundredths)   50.00%    
Percentage of employers matching contributions vests after three years of credited service (in hundredths)   100.00%