CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 121,349	$ 107,356
Short-term investments	31,957	42,994
Accounts receivable, net	57,431	69,918
Inventories, net	55,206	45,571
Deferred income tax assets, net	8,619	7,792
Prepaid expenses and other current assets	20,426	18,527
Total current assets	294,988	292,158
Property and equipment:
Machinery and equipment	57,197	54,124
Furniture and fixtures	6,291	5,945
Leasehold improvements	18,942	18,471
Property and equipment, at cost	82,430	78,540
Less: accumulated depreciation and amortization	(49,671)	(42,594)
Property and equipment, net	32,759	35,946
Goodwill	41,721	26,371
Intangible assets, net	21,967	15,985
Service and sales demonstration inventory, net	33,661	33,709
Deferred income tax assets, net	4,535	4,050
Other long term assets	971	967
Total assets	430,602	409,186
Current liabilities:
Accounts payable	11,507	11,345
Accrued liabilities	24,325	22,574
Current portion of unearned service revenues	27,212	26,114
Customer deposits	2,763	2,998
Total current liabilities	65,807	63,031
Unearned service revenues - less current portion	15,600	15,025
Deferred income tax liabilities	1,163	686
Other long-term liabilities	2,430	2,800
Total liabilities	85,000	81,542
Commitments and contingencies - See Note 16
Shareholders’ equity:
Common stock - par value $.001, 50,000,000 shares authorized; 18,163,850 and 18,077,594 issued; 16,674,374 and 16,588,118 outstanding, respectively	18	18
Additional paid-in capital	211,227	206,996
Retained earnings	179,891	172,329
Accumulated other comprehensive loss	(13,696)	(19,861)
Common stock in treasury, at cost - 1,489,476 shares	(31,838)	(31,838)
Total shareholders’ equity	345,602	327,644
Total liabilities and shareholders’ equity	$ 430,602	$ 409,186