CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 101,969	$ 121,989
Accounts receivable, net	70,915	78,523
Inventories, net	44,076	53,145
Prepaid expenses and other current assets	25,248	19,793
Total current assets	242,208	273,450
Non-current assets:
Property, plant and equipment, net	21,109	22,194
Operating lease right-of-use assets	20,154	22,543
Goodwill	79,595	82,096
Intangible assets, net	28,382	25,616
Service and sales demonstration inventory, net	29,692	30,554
Deferred income tax assets, net	19,635	21,277
Other long-term assets	2,174	2,010
Total assets	442,949	479,740
Current liabilities:
Accounts payable	13,635	14,199
Accrued liabilities	24,692	28,208
Income taxes payable	6,539	4,499
Current portion of unearned service revenues	36,372	40,838
Customer deposits	6,975	5,399
Lease liabilities	5,867	5,738
Total current liabilities	94,080	98,881
Unearned service revenues - less current portion	22,323	22,350
Lease liabilities - less current portion	16,053	18,648
Deferred income tax liabilities	1,010	1,058
Income taxes payable - less current portion	10,131	11,297
Other long-term liabilities	956	1,047
Total liabilities	144,553	153,281
Commitments and contingencies - See Note 12
Shareholders’ equity:
Common stock - par value $0.001, 50,000,000 shares authorized; 19,651,715 and 19,588,003 issued, respectively; 18,275,364 and 18,205,636 outstanding, respectively	20	20
Additional paid-in capital	306,119	301,061
Retained earnings	55,283	73,544
Accumulated other comprehensive loss	(32,369)	(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	298,396	326,459
Total liabilities and shareholders’ equity	$ 442,949	$ 479,740