CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 37,165	$ 44,583
Short-term investments	0	14,999
Accounts receivable, net	26,920	26,908
Prepaid expenses	7,322	6,641
Other current assets	785	922
Total current assets	72,192	94,053
Non-current assets:
Property and equipment, net	6,379	6,746
Operating lease right-of-use assets	16,148	15,821
Goodwill	99,175	99,175
Deferred income tax assets, net	31,494	31,653
Other non-current assets	1,153	706
Total non-current assets	154,349	154,101
Total assets	226,541	248,154
Current liabilities:
Accounts payable	5,792	5,292
Accrued compensation and benefits	10,560	13,948
Deferred revenue	26,203	25,608
Operating lease liabilities	5,139	5,405
Other current liabilities	5,013	4,745
Total current liabilities	52,707	54,998
Non-current liabilities:
Asset retirement obligations	6,634	6,355
Operating lease liabilities	12,976	11,883
Other non-current liabilities	962	1,227
Total non-current liabilities	20,572	19,465
Total liabilities	73,279	74,463
Commitments and contingencies (Note $13)
Stockholders' equity:
Preferred stock	0	0
Common stock	2	2
Additional paid-in capital	99,035	97,291
Accumulated other comprehensive loss	(2,060)	(1,588)
Retained earnings	56,285	77,986
Total stockholders’ equity	153,262	173,691
Total liabilities and stockholders' equity	$ 226,541	$ 248,154