Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 110,140	$ 125,816
Accounts receivable, net	27,057	23,666
Prepaid expenses and other	6,637	4,384
Inventory	1,906	1,996
Total current assets	145,740	155,862
Non-current assets:
Property and equipment, net	13,706	12,818
Goodwill	133,031	133,031
Intangible assets, net	8,542	10,803
Deferred income tax assets	71,973	73,068
Other non-current assets	2,025	2,505
Total non-current assets	229,277	232,225
TOTAL ASSETS	375,017	388,087
Current liabilities:
Accounts payable	3,023	1,909
Accrued compensation and benefits	13,577	13,268
Accrued dividends payable	365	5,140
Accrued taxes	2,668	4,132
Deferred revenue	30,159	29,145
Other current liabilities	2,185	2,733
Total current liabilities	51,977	56,327
Non-current liabilities:
Deferred revenue	1,051	752
Other non-current liabilities	8,620	8,921
Total non-current liabilities	9,671	9,673
TOTAL LIABILITIES	61,648	66,000
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Common stock	2	2
Additional paid-in capital	97,630	104,810
Retained earnings	215,737	217,275
TOTAL STOCKHOLDERS’ EQUITY	313,369	322,087
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 375,017	$ 388,087