CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 126,562	$ 106,045
Accounts receivable, net	59,844	30,913
Inventories, net	1,247	3,311
Prepaid expenses	3,329	3,059
Other current assets	732	786
Total current assets	191,714	144,114
Property and equipment
Furniture and equipment	15,420	13,574
Leasehold improvements	2,994	2,669
Finance leases right-of-use assets	30,784	30,791
Property and equipment, gross	49,198	47,034
Less: Accumulated depreciation and amortization	(34,057)	(32,057)
Net property and equipment	15,141	14,977
Operating lease right-of-use assets	852	1,464
Goodwill	17,922	14,916
Intangible assets, net	19,199	7,420
Other assets	1,253	926
Total assets	246,081	183,817
Current liabilities
Accounts payable and other accrued liabilities	34,548	20,899
Accrued compensation and benefits	6,557	8,474
Contract liabilities	6,381	5,654
Finance lease obligations – short-term	1,461	1,339
Operating lease obligations – short-term	564	677
Other current liabilities	1,430	1,903
Total current liabilities	50,941	38,946
Finance lease obligations - long-term	12,840	14,301
Operating lease obligations - long-term	388	941
Deferred income taxes	723	652
Other liabilities	935	1,873
Total liabilities	65,827	56,713
Commitments and contingencies (Note 18)
Stockholders’ equity
Common stock, $0.001 par value, 250,000,000 shares authorized, 66,767,450 shares and 64,625,071 shares issued and outstanding as of December 31, 2021 and 2020, respectively	105	103
Additional paid-in capital	367,153	270,800
Accumulated other comprehensive (loss) income	(27)	44
Accumulated deficit	(186,977)	(143,843)
Total stockholders’ equity	180,254	127,104
Total liabilities and stockholders' equity	$ 246,081	$ 183,817