CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and equivalents	$ 85,931	$ 84,282
Short term investments	26,811	25,511
Accounts receivable, net of allowances of $3,837 in 2020 and $2,524 in 2019	54,475	62,405
Inventories, net	14,029	19,819
Prepaid expenses	6,439	6,198
Contract assets	6,609	5,240
Other current assets	7,831	6,346
Total current assets	202,125	209,801
Property and equipment, net	12,060	11,454
Operating lease right-of-use assets	11,508	10,580
Goodwill	94,159	94,612
Intangible assets, net of accumulated amortization	28,743	36,209
Deferred income taxes	8,158	7,863
Contract assets - non-current	2,329	3,355
Other assets	10,451	8,668
Total assets	369,533	382,542
Current liabilities
Accounts payable	5,300	10,835
Deferred revenue	36,607	30,338
Accrued wages and payroll taxes	12,631	15,415
Short-term income taxes payable	2,459	7,410
Other accrued expenses	8,292	8,786
Deferred compensation	1,350	1,028
Total current liabilities	66,639	73,812
Long-term deferred revenue	12,644	15,259
Long-term lease liability	12,523	11,299
Other long-term liabilities	8,227	8,297
Long-term income taxes payable	5,905	6,958
Deferred income taxes	4,379	4,623
Total liabilities	110,317	120,248
Stockholders' equity
Preferred stock: 500 shares authorized, none issued and outstanding at December 31, 2020 and 2019
Common stock: $.001 par value per share, 75,000 shares authorized; 40,356 and 40,207 issued and outstanding at September 30, 2020 and December 31, 2019, respectively	40	40
Additional paid-in capital	97,378	96,109
Accumulated income	175,488	179,440
Accumulated other comprehensive loss	(13,690)	(13,295)
Total stockholders' equity	259,216	262,294
Total liabilities and stockholders' equity	$ 369,533	$ 382,542