CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 107,157	$ 125,816
Accounts receivable, net	32,279	23,666
Prepaid expenses and other	5,752	4,384
Inventory, net	1,672	1,996
Total current assets	146,860	155,862
Non-current assets:
Property and equipment, net	13,399	12,818
Goodwill	133,031	133,031
Intangible assets, net	7,917	10,803
Deferred income tax assets, net	47,679	73,068
Other non-current assets	1,675	2,505
Total non-current assets	203,701	232,225
TOTAL ASSETS	350,561	388,087
Current liabilities:
Accounts payable	1,305	1,032
Accrued compensation and benefits	11,018	13,268
Accrued dividends payable	384	5,140
Accrued taxes	2,547	4,132
Deferred revenue	31,414	29,145
Other current liabilities	4,226	3,610
Total current liabilities	50,894	56,327
Non-current liabilities:
Deferred revenue	1,063	752
Other non-current liabilities	8,075	8,921
Total non-current liabilities	9,138	9,673
TOTAL LIABILITIES	60,032	66,000
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS’ EQUITY:
Preferred stock—$0.0001 par value; 25,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock—$0.0001 par value; 75,000,000 shares authorized; 20,135,514 and 20,525,614 shares issued and outstanding as of December 31, 2017 and December 31, 2016, respectively	2	2
Additional paid-in capital	98,731	104,810
Retained earnings	191,796	217,275
TOTAL STOCKHOLDERS’ EQUITY	290,529	322,087
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 350,561	$ 388,087