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Business Combinations - Additional Information (Detail)
$ / shares in Units, $ in Thousands, € in Millions
3 Months Ended 4 Months Ended 6 Months Ended
Jan. 08, 2016
USD ($)
Nov. 20, 2015
USD ($)
Nov. 20, 2015
EUR (€)
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
$ / shares
Nov. 20, 2015
EUR (€)
Business Acquisition [Line Items]                    
Acquisition transaction, integration and other costs           $ 640     $ 3,131  
Business acquisition, revenue recognized       $ 17,503   16,699   $ 35,264 33,240  
Business acquisition, loss recognized       $ 506   821   2,806 3,474  
Creagh Medical Ltd [Member]                    
Business Acquisition [Line Items]                    
Outstanding common shares and voting shares percentage   100.00%               100.00%
Payments to acquire business               28,274    
Upfront payments   $ 19,300 € 18         18,449    
Contingent milestone payments   12,800               € 12
Acquisition transaction, integration and other costs           400     2,600  
Business acquisition, revenue recognized             $ 1,300      
Business acquisition, loss recognized             $ (1,000)      
Creagh Medical Ltd [Member] | Maximum [Member]                    
Business Acquisition [Line Items]                    
Payments to acquire business   $ 32,000 € 30              
NorMedix, Inc. [Member]                    
Business Acquisition [Line Items]                    
Outstanding common shares and voting shares percentage 100.00%                  
Payments to acquire business               10,425    
Upfront payments $ 7,000             $ 6,905    
Contingent milestone payments 7,000                  
Acquisition transaction, integration and other costs           $ 200     300  
Business acquisition, revenue recognized         $ 300          
Business acquisition, loss recognized         $ (100)          
NorMedix, Inc. [Member] | Maximum [Member]                    
Business Acquisition [Line Items]                    
Payments to acquire business $ 14,000                  
Creagh Medical and NorMedix [Member]                    
Business Acquisition [Line Items]                    
Consolidated pro forma revenue                 34,300  
Consolidated pro forma net income                 $ 2,900  
Basic and diluted earnings per share | $ / shares                 $ 0.22  
Creagh Medical and NorMedix [Member] | Unaudited Pro Forma [Member]                    
Business Acquisition [Line Items]                    
Amortization expense on intangible assets                 $ 400  
Contingent consideration accretion expense                 300  
Non-recurring professional fees                 2,900  
Tax effect impact                 $ 300