Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 157,775	$ 134,466
Restricted cash	10,721	0
Short-term investments	0	58,558
Accounts receivable	12,757	20,168
Deferred income taxes	1,161	1,161
Prepaid expenses and other current assets	4,926	4,355
Total current assets	187,340	218,708
Property and equipment, net of accumulated depreciation and amortization	319	500
Patents, net of accumulated amortization	249,486	286,636
Goodwill	30,149	30,149
Other assets	353	355
Total assets	467,647	536,348
Current liabilities:
Accounts payable and accrued expenses	17,477	14,860
Accrued patent investment costs	0	16,700
Royalties and contingent legal fees payable	9,243	14,351
Total current liabilities	26,720	45,911
Deferred income taxes	1,161	1,161
Other liabilities	291	228
Total liabilities	$ 28,172	$ 47,300
Commitments and contingencies (Note 5)
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; 100,000,000 shares authorized; 50,750,245 and 50,065,382 shares issued and outstanding as of September 30, 2015 and December 31, 2014, respectively	51	50
Treasury stock, at cost, 1,729,408 shares as of September 30, 2015 and December 31, 2014	(34,640)	(34,640)
Additional paid-in capital	637,029	646,595
Accumulated comprehensive loss	(233)	(353)
Accumulated deficit	(172,221)	(128,095)
Total Acacia Research Corporation stockholders' equity	429,986	483,557
Noncontrolling interests in operating subsidiaries	9,489	5,491
Total stockholders' equity	439,475	489,048
Total liabilities and stockholders' equity	$ 467,647	$ 536,348