CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 344,733	$ 287,786
Equity securities	64,511	61,608
Equity securities without readily determinable fair value	5,816	5,816
Equity method investments	30,934	30,934
Accounts receivable, net	5,896	8,231
Inventories	12,375	14,222
Prepaid expenses and other current assets	20,182	19,388
Total current assets	484,447	427,985
Property, plant and equipment, net	2,647	3,537
Goodwill	7,541	7,541
Other intangible assets, net	27,557	36,658
Leased right-of-use assets	1,488	2,005
Deferred income tax assets, net	321	0
Other non-current assets	5,146	5,202
Total assets	529,147	482,928
Current liabilities:
Accounts payable	8,530	6,036
Accrued expenses and other current liabilities	5,256	14,058
Accrued compensation	5,202	4,737
Royalties and contingent legal fees payable	1,296	699
Accrued patent costs	0	9,000
Deferred revenue	1,149	1,229
Senior secured notes payable	0	60,450
Total current liabilities	21,433	87,209
Deferred revenue, net of current portion	497	568
Series A embedded derivative liabilities	0	16,835
Series B warrant liabilities	0	84,780
Long-term lease liabilities	1,535	1,873
Deferred income tax liabilities, net	0	742
Other long-term liabilities	2,084	1,675
Total liabilities	25,549	193,682
Commitments and contingencies
Series A redeemable convertible preferred stock, par value $0.001 per share; stated value $100 per share; zero and 350,000 shares authorized, issued and outstanding as of September 30, 2023 and December 31, 2022, respectively; aggregate liquidation preference of zero and $35,000 as of September 30, 2023 and December 31, 2022, respectively	0	19,924
Stockholders' equity:
Preferred stock, par value $0.001 per share; 10,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, par value $0.001 per share; 300,000,000 shares authorized; 99,886,322 and 43,484,867 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively	99	43
Treasury stock, at cost, 16,183,703 shares as of September 30, 2023 and December 31, 2022	(98,258)	(98,258)
Additional paid-in capital	905,200	663,284
Accumulated deficit	(314,485)	(306,789)
Total Acacia Research Corporation stockholders' equity	492,556	258,280
Noncontrolling interests	11,042	11,042
Total stockholders' equity	503,598	269,322
Total liabilities, redeemable convertible preferred stock, and stockholders' equity	$ 529,147	$ 482,928
Treasury Stock, Common, Shares	16,183,703