CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 106,169	$ 107,356
Short-term investments	42,942	42,994
Accounts receivable, net	61,364	69,918
Inventories, net	51,886	45,571
Deferred income tax assets, net	7,565	7,792
Prepaid expenses and other current assets	16,304	18,527
Total current assets	286,230	292,158
Property and equipment:
Machinery and equipment	57,063	54,124
Furniture and fixtures	6,099	5,945
Leasehold improvements	18,778	18,471
Property and equipment at cost	81,940	78,540
Less: accumulated depreciation and amortization	(50,262)	(42,594)
Property and equipment, net	31,678	35,946
Goodwill	46,744	26,371
Intangible assets, net	22,279	15,985
Service and sales demonstration inventory, net	29,136	33,709
Deferred income tax assets, net	6,742	4,050
Other long-term assets	905	967
Total assets	423,714	409,186
Current liabilities:
Accounts payable	11,126	11,345
Accrued liabilities	24,572	22,574
Income taxes payable	618	0
Current portion of unearned service revenues	27,422	26,114
Customer deposits	2,872	2,998
Total current liabilities	66,610	63,031
Unearned service revenues - less current portion	13,813	15,025
Deferred income tax liabilities	1,409	686
Other long-term liabilities	2,225	2,800
Total liabilities	84,057	81,542
Commitments and contingencies
Shareholders’ equity:
Preferred stock - par value $0.01, 10,000,000 shares authorized; none issued	0	0
Common stock - par value $.001, 50,000,000 shares authorized; 18,170,267 and 18,077,594 issued; 16,680,791 and 16,588,118 outstanding, respectively	18	18
Additional paid-in capital	212,602	206,996
Retained earnings	183,436	172,329
Accumulated other comprehensive loss	(24,561)	(19,861)
Common stock in treasury, at cost - 1,489,476 shares	(31,838)	(31,838)
Total shareholders’ equity	339,657	327,644
Total liabilities and shareholders’ equity	$ 423,714	$ 409,186