Fair Value - Summary of Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Assets measured at fair value
Cash and cash equivalents	$ 9,598	$ 21,061
Restricted cash	969	590
Total Assets measured at fair value	10,567	21,651
Liabilities measured at fair value
Contingent consideration	1,084	10,637
Warrant liabilities	2,388	4,636
Total liabilities measured at fair value	3,472	15,273
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets measured at fair value
Cash and cash equivalents	9,598	21,061
Restricted cash	969	590
Total Assets measured at fair value	10,567	21,651
Liabilities measured at fair value
Contingent consideration	0	0
Warrant liabilities	0	0
Total liabilities measured at fair value	0	0
Significant Other Observable Inputs (Level 2)
Assets measured at fair value
Cash and cash equivalents	0	0
Restricted cash	0	0
Total Assets measured at fair value	0	0
Liabilities measured at fair value
Contingent consideration	0	0
Warrant liabilities	0	0
Total liabilities measured at fair value	0	0
Level 3
Assets measured at fair value
Cash and cash equivalents	0	0
Restricted cash	0	0
Total Assets measured at fair value	0	0
Liabilities measured at fair value
Contingent consideration	1,084	10,637
Warrant liabilities	2,388	4,636
Total liabilities measured at fair value	$ 3,472	$ 15,273