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Business Combinations - Additional Information (Detail)
2 Months Ended 3 Months Ended 6 Months Ended
May 07, 2019
USD ($)
Center
Jun. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Jun. 30, 2018
USD ($)
Mar. 31, 2018
USD ($)
Jun. 30, 2019
USD ($)
Center
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]                  
Goodwill   $ 22,559,000 $ 22,559,000       $ 22,559,000   $ 12,005,000
Net deferred tax assets related to assets acquired and liabilities assumed $ 200,000                
Valuation allowance $ 200,000                
Revenue     31,454,000   $ 17,823,000   57,436,000 $ 31,876,000  
Net loss     (7,847,000) $ (7,531,000) (14,062,000) $ (8,994,000) (15,378,000) (23,056,000)  
Digital and Other [Member]                  
Business Acquisition [Line Items]                  
Revenue     $ 1,184,000   $ 276,000   $ 1,215,000 $ 418,000  
Royalty Rate [Member] | Developed Technology [Member]                  
Business Acquisition [Line Items]                  
Rate used in estimating fair value 15                
Royalty Rate [Member] | Trademarks [Member]                  
Business Acquisition [Line Items]                  
Rate used in estimating fair value 1                
Discount Rate [Member]                  
Business Acquisition [Line Items]                  
Rate used in estimating fair value 14.5                
OTTR Complete Transplant Management [Member]                  
Business Acquisition [Line Items]                  
Acquisition, closing date May 07, 2019           May 07, 2019    
Percentage of outstanding equity to be acquired 100.00%                
Total consideration $ 16,148,000                
Number of leading transplant centers | Center             60    
Goodwill 10,554,000                
Goodwill expected to be deductible for income tax purposes 0                
Deferred revenue 2,300,000                
Net operating losses carryforward 6,900,000                
Net operating losses carryforward expires in future 4,300,000                
Operating loss carry forwards with indefinite carry forward period $ 2,600,000                
Operating loss carryforwards, expiration year 2033                
Net loss             $ 100,000    
OTTR Complete Transplant Management [Member] | Digital and Other [Member]                  
Business Acquisition [Line Items]                  
Revenue   $ 1,100,000         $ 1,100,000    
OTTR Complete Transplant Management [Member] | General and Administrative Expenses [Member]                  
Business Acquisition [Line Items]                  
Acquisition related costs $ 600,000                
OTTR Complete Transplant Management [Member] | Minimum [Member]                  
Business Acquisition [Line Items]                  
Number of leading transplant centers | Center 60