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Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plan	11. Employee Benefit Plan CBLI maintains an active defined contribution retirement plan for its employees, referred to herein as the Benefit Plan. All employees satisfying certain service requirements are eligible to participate in the Benefit Plan. The Company makes matching cash contributions each payroll period, up to 4% of employees’ contributions. The Company’s expense relating to the Benefit Plan was $196,257, $201,510 and $182,669 for the years ended December 31, 2013, 2012 and 2011, respectively.