CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 27,301	$ 35,754
Accounts receivable, net	25,141	26,861
Prepaid expenses	7,428	6,849
Other current assets	1,293	587
Total current assets	61,163	70,051
Non-current assets:
Property and equipment, net	7,376	8,223
Operating lease right-of-use assets	11,661	13,876
Goodwill	99,175	99,175
Deferred income tax assets, net	46,982	52,398
Other non-current assets	570	754
Total non-current assets	165,764	174,426
Total assets	226,927	244,477
Current liabilities:
Accounts payable	4,445	5,880
Accrued compensation and benefits	5,367	11,628
Deferred revenue	25,238	27,255
Operating lease liabilities	4,774	5,096
Other current liabilities	5,359	4,573
Total current liabilities	45,183	54,432
Non-current liabilities:
Asset retirement obligations	7,543	7,237
Operating lease liabilities	7,468	10,604
Other non-current liabilities	1,228	1,107
Total non-current liabilities	16,239	18,948
Total liabilities	61,422	73,380
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock	0	0
Common stock	2	2
Additional paid-in capital	101,496	99,908
Accumulated other comprehensive loss	(1,780)	(1,909)
Retained earnings	65,787	73,096
Total stockholders’ equity	165,505	171,097
Total liabilities and stockholders' equity	$ 226,927	$ 244,477