CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 31,344	$ 56,818
Restricted cash	2,413	2,416
Accounts receivable, net of allowances	55,257	77,046
Inventories	21,993	19,922
Prepaid expenses	8,766	5,464
Contract assets	17,728	18,903
Other current assets	2,380	1,953
Total current assets	139,881	182,522
Property and equipment, net	21,215	16,028
Goodwill	32,643	32,643
Right of use assets	20,553	24,143
Deferred tax assets, net	3,972	5,210
Other long-term assets	19,271	13,454
Total assets	237,535	274,000
Current liabilities:
Accounts payable	34,906	26,854
Accrued compensation and benefits	22,453	35,458
Accrued expenses and other current liabilities	35,560	37,552
Income taxes payable	27	868
Less: current portion	8,694	9,158
Deferred revenues	60,630	87,475
Total current liabilities	162,270	197,365
Long-term debt	175,683	160,806
Long-term deferred revenues	16,045	10,607
Long-term lease liabilities	19,978	23,379
Other long-term liabilities	4,960	5,917
Total liabilities	378,936	398,074
Commitments and contingencies (Note 7)
Stockholders' deficit:
Common stock, par value $0.01; authorized: 100,000 shares; issued: 46,472 shares at September 30, 2022 and 45,828 shares at December 31, 2021; outstanding: 43,926 shares at September 30, 2022 and 44,954 shares at December 31, 2021	461	455
Treasury stock	(68,651)	(25,090)
Additional paid-in capital	1,031,232	1,031,633
Accumulated deficit	(1,096,978)	(1,126,959)
Accumulated other comprehensive loss	(7,465)	(4,113)
Total stockholders' deficit	(141,401)	(124,074)
Total liabilities and stockholders' deficit	$ 237,535	$ 274,000