Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.10.0.1
Subsequent Events - Additional Information (Detail) - USD ($)
Jun. 11, 2018
May 31, 2018
Nov. 30, 2017
Subsequent Event [Line Items]      
Common stock par value   $ 0.01 $ 0.01
Subsequent Event [Member] | Texas Capital Bank National Association [Member] | Term Loan [Member] | Amended And Restated Promissory Notes [Member]      
Subsequent Event [Line Items]      
Second amended and restated promissory note principal amount $ 15,499,999.81    
Line of credit facility, interest rate 3.35%    
Line of credit facility, expiration date Jun. 30, 2023    
Subsequent Event [Member] | Texas Capital Bank National Association [Member] | Term Loan [Member] | Second Amended Senior Credit Facility [Member]      
Subsequent Event [Line Items]      
Line of credit facility increase in current outstanding principal $ 9,000,000    
Subsequent Event [Member] | Blood Bank Inc And Tianhe Stem Cell Biotechnologies Inc [Member]      
Subsequent Event [Line Items]      
Consideration under asset purchase agreement 14,000,000    
Payment under asset purchase agreement $ 10,500,000    
Shares issued under asset purchase agreement 465,426    
Common stock par value $ 0.01    
Sale of stock price per share $ 7.52