Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans (Details)

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Employee Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]      
Employees contribution 50.00%    
Company's matching discretion on employee contributions to the Plan 100.00%    
Participant's earnings contributed to the Plan 4.00%    
Company's matching discretion on employee contributions to the Plan $ 0.5 $ 0.3 $ 0.2