CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 107,192	$ 121,989
Accounts receivable, net	76,745	78,523
Inventories, net	53,992	53,145
Prepaid expenses and other current assets	23,063	19,793
Total current assets	260,992	273,450
Non-current assets:
Property, plant and equipment, net	22,454	22,194
Operating lease right-of-use assets	21,141	22,543
Goodwill	81,507	82,096
Intangible assets, net	27,223	25,616
Service and sales demonstration inventory, net	31,894	30,554
Deferred income tax assets, net	20,713	21,277
Other long-term assets	1,979	2,010
Total assets	467,903	479,740
Current liabilities:
Accounts payable	14,793	14,199
Accrued liabilities	25,650	28,208
Income taxes payable	5,760	4,499
Current portion of unearned service revenues	40,286	40,838
Customer deposits	5,876	5,399
Lease liabilities	5,653	5,738
Total current liabilities	98,018	98,881
Unearned service revenues - less current portion	22,486	22,350
Lease liabilities - less current portion	17,288	18,648
Deferred income tax liabilities	1,041	1,058
Income taxes payable - less current portion	11,297	11,297
Other long-term liabilities	1,034	1,047
Total liabilities	151,164	153,281
Commitments and contingencies - See Note 12
Shareholders’ equity:
Common stock - par value $0.001, 50,000,000 shares authorized; 19,637,028 and 19,588,003 issued, respectively; 18,260,677 and 18,205,636 outstanding, respectively	20	20
Additional paid-in capital	302,877	301,061
Retained earnings	63,857	73,544
Accumulated other comprehensive loss	(19,358)	(17,374)
Common stock in treasury, at cost - 1,376,351 and 1,382,367 shares held, respectively	(30,657)	(30,792)
Total shareholders’ equity	316,739	326,459
Total liabilities and shareholders’ equity	$ 467,903	$ 479,740