Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 53,487	$ 82,217
Accounts receivable, net of allowances of $1,224 and $1,240, respectively	153,199	107,957
Inventories	71,914	46,594
Prepaid expenses	21,855	19,586
Other current assets	9,853	7,774
Total current assets	310,308	264,128
Property and equipment, net	42,208	32,309
Long-term investment in sales-type leases, net	21,037	14,484
Goodwill	312,511	147,906
Intangible assets, net	206,261	89,665
Long-term deferred tax assets	2,638	2,361
Other long-term assets	28,809	27,894
Total assets	923,772	578,747
Current liabilities:
Accounts payable	32,142	22,646
Accrued compensation	31,918	18,195
Accrued liabilities	34,903	30,133
Long-term debt, current portion, net	8,410	0
Deferred revenue, net	92,273	53,656
Total current liabilities	199,646	124,630
Long-term, deferred revenue	17,820	17,975
Long-term deferred tax liabilities	64,984	21,822
Other long-term liabilities	11,771	11,932
Long-term debt, net	219,046	0
Total liabilities	$ 513,267	$ 176,359
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued	$ 0	$ 0
Common stock, $0.001 par value, 100,000 shares authorized; 45,010 and 44,739 shares issued; 35,865, and 35,594 shares outstanding, respectively	45	45
Treasury stock at cost, 9,145 shares outstanding	(185,074)	(185,074)
Additional paid-in capital	499,176	490,354
Retained earnings	99,415	99,793
Accumulated other comprehensive loss	(3,057)	(2,730)
Total stockholders’ equity	410,505	402,388
Total liabilities and stockholders’ equity	$ 923,772	$ 578,747