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Fair value measurements (Tables)
12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Assets measured at fair value on recurring basis
The Company’s assets that are measured at fair value on a recurring basis within the fair value hierarchy are summarized as follows:
December 31, 2020December 31, 2019
(in thousands)Level 1Level 2TotalLevel 1Level 2Total
Cash equivalents (1):
Money market funds$19,445 $— $19,445 $4,413 $— $4,413 
Total cash equivalents$19,445 $— $19,445 $4,413 $— $4,413 
Marketable securities:
Corporate debt securities$— $— $— $— $14,847 $14,847 
Total marketable securities$— $— $— $— $14,847 $14,847 
(1)    Included in cash and cash equivalents in the accompanying Consolidated Balance Sheets. Cash balances were $308.2 million, including $2.0 million of restricted cash, and $145.9 million as of December 31, 2020 and 2019, respectively.