CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 134,135	$ 106,045
Accounts receivable, net of reserve of $116 and $308, respectively	49,759	30,913
Inventories, net of obsolescence reserve of $849 and $851, respectively	2,025	3,311
Prepaid expenses	5,440	3,059
Other current assets	941	786
Total current assets	192,300	144,114
Property and equipment, net of accumulated depreciation and amortization of $33,805 and $32,057, respectively	14,363	14,977
Operating lease right-of-use assets	1,004	1,464
Goodwill	16,642	14,916
Intangible assets, net	17,102	7,420
Other assets	1,256	926
Total assets	242,667	183,817
Current liabilities
Accounts payable and other accrued liabilities	35,102	20,899
Accrued compensation and benefits	7,955	8,474
Contract liabilities	7,232	5,654
Finance lease obligations – short-term	1,430	1,339
Operating lease obligations – short-term	602	677
Other current liabilities	2,089	1,903
Total current liabilities	54,410	38,946
Finance lease obligations – long-term	13,218	14,301
Operating lease obligations – long-term	516	941
Deferred income taxes	680	652
Other liabilities	2,352	1,873
Total liabilities	71,176	56,713
Commitments and contingencies (Note 11)
Stockholders’ equity
Common stock, $0.001 par value, 250,000,000 shares authorized, 66,755,230 shares and 64,625,071 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	105	103
Additional paid-in capital	354,119	270,800
Accumulated other comprehensive income	4	44
Accumulated deficit	(182,737)	(143,843)
Total stockholders’ equity	171,491	127,104
Total liabilities and stockholders’ equity	$ 242,667	$ 183,817