Annual report pursuant to Section 13 and 15(d)

Contingent Earn-Out Consideration - Schedule Of Changes In Present Value Of Acquisition Related Contingent Earn-Out Consideration (Detail)

v3.19.1
Contingent Earn-Out Consideration - Schedule Of Changes In Present Value Of Acquisition Related Contingent Earn-Out Consideration (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition, Contingent Consideration [Line Items]    
Beginning Balance $ 69 $ 66
Acquisitions 51 36
Accretion of acquisition-related contingent earn-out consideration (1) 4
Change in the estimated fair value of contingent earn-out consideration 76 (23)
Reclassification of payments due in next 12 months to short-term 0 0
Payments (140) (14)
Ending Balance 55 69
Short-Term Accrued Expenses [Member]    
Business Acquisition, Contingent Consideration [Line Items]    
Beginning Balance 69 66
Acquisitions 38 36
Accretion of acquisition-related contingent earn-out consideration (1) 4
Change in the estimated fair value of contingent earn-out consideration 74 (23)
Reclassification of payments due in next 12 months to short-term 0 0
Payments (140) (14)
Ending Balance 40 69
Long-Term Other Liabilities [Member]    
Business Acquisition, Contingent Consideration [Line Items]    
Acquisitions 13  
Change in the estimated fair value of contingent earn-out consideration 2  
Reclassification of payments due in next 12 months to short-term 0 $ 0
Ending Balance $ 15