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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 57,607 $ 36,594
Short-term investments 74,118 97,000
Accounts receivable 18,253 21,166
Inventories, net 24,285 23,254
Prepaid and other current assets 7,009 5,417
Total current assets 181,272 183,431
Non-current assets:    
Property and equipment, net 13,283 13,867
Goodwill 1,316 1,316
Operating lease right-of-use assets 12,801 13,122
Restricted cash 2,200 2,309
Other assets 9,710 7,370
Total assets 220,582 221,415
Current liabilities:    
Accounts payable 22,538 24,213
Accrued liabilities 19,746 24,753
Debt – current 9,938 8,516
Operating lease liabilities – current 1,486 1,915
Deferred product revenue 1,056 577
Total current liabilities 54,764 59,974
Non-current liabilities:    
Debt – non-current 54,616 39,588
Operating lease liabilities – non-current 16,697 16,873
Other non-current liabilities 1,870 1,174
Total liabilities 127,947 117,609
Commitments and contingencies
Stockholders' equity:    
Common stock 168 168
Additional paid-in capital 1,019,436 1,012,932
Accumulated other comprehensive income 456 674
Accumulated deficit (927,425) (909,968)
Total stockholders' equity 92,635 103,806
Total liabilities and stockholders' equity $ 220,582 $ 221,415