Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 41,029	$ 82,217
Accounts receivable, net of allowances for doubtful accounts of $1,116 and $1,240, respectively	159,453	107,957
Inventories	73,720	46,594
Prepaid expenses	28,690	19,586
Other current assets	9,024	7,774
Total current assets	311,916	264,128
Property and equipment, net	40,503	32,309
Long-term investment in sales-type leases, net	19,711	14,484
Goodwill	311,170	147,906
Intangible assets, net	196,475	89,665
Long-term, deferred tax assets	2,920	2,361
Other long-term assets	30,733	27,894
Total assets	913,428	578,747
Current liabilities:
Accounts payable	37,365	22,646
Accrued compensation	28,014	18,195
Accrued liabilities	32,674	30,133
Long-term debt, current portion, net	8,410	0
Deferred revenue, net	84,852	53,656
Total current liabilities	191,315	124,630
Long-term deferred revenue	17,473	17,975
Long-term deferred tax liabilities	62,431	21,822
Other long-term liabilities	12,074	11,932
Long-term debt, net	216,936	0
Total liabilities	500,229	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; 45,276 and 44,739 shares issued; 36,131 and 35,594 shares outstanding, respectively	45	45
Treasury stock at cost, 9,145 shares outstanding	(185,074)	(185,074)
Additional paid-in capital	507,496	490,354
Retained earnings	98,256	99,793
Accumulated other comprehensive loss	(7,524)	(2,730)
Total stockholders’ equity	413,199	402,388
Total liabilities and stockholders’ equity	$ 913,428	$ 578,747