Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Additional Information (Detail)

v3.2.0.727
Employee Benefit Plans - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Defined Contribution Plan Disclosure [Line Items]    
Defined Contribution Plan, Contributions by Employer $ 0 $ 0
Uk Plan [Member]    
Defined Contribution Plan Disclosure [Line Items]    
Defined Contribution Plan, Contributions by Employer $ 129,353 $ 135,553
Uk Plan [Member] | Maximum [Member]    
Defined Contribution Plan Disclosure [Line Items]    
Defined Contribution Plan, Employer contribution percentage 12.00%  
Uk Plan [Member] | Minimum [Member]    
Defined Contribution Plan Disclosure [Line Items]    
Defined Contribution Plan, Employee contribution percentage 3.00%  
Defined Contribution Plan, Employer contribution percentage 8.00%