Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 118,947	$ 125,816
Accounts receivable, net	24,079	23,666
Prepaid expenses and other	4,650	4,384
Inventory	1,841	1,996
Total current assets	149,517	155,862
Non-current assets:
Property and equipment, net	13,600	12,818
Goodwill	133,031	133,031
Intangible assets, net	9,796	10,803
Deferred income tax assets, net		73,068
Other non-current assets	2,519	2,505
Assets, Noncurrent	231,748	232,225
TOTAL ASSETS	381,265	388,087
Current liabilities:
Accounts payable	1,976	1,909
Accrued compensation and benefits	11,080	13,268
Accrued dividends payable	11	5,140
Accrued taxes	4,047	4,132
Deferred revenue	30,663	29,145
Other current liabilities	2,560	2,733
Total current liabilities	50,337	56,327
Non-current liabilities:
Deferred revenue	749	752
Other non-current liabilities	8,774	8,921
Total non-current liabilities	9,523	9,673
TOTAL LIABILITIES	59,860	66,000
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Common stock	2	2
Additional paid-in capital	105,766	104,810
Retained earnings	215,637	217,275
TOTAL STOCKHOLDERS’ EQUITY	321,405	322,087
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 381,265	$ 388,087