Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 116,016	$ 135,223
Restricted cash	14,041	10,725
Short-term investments	30,326	0
Accounts receivable	53,700	33,500
Deferred income taxes	210	210
Prepaid expenses and other current assets	3,773	4,219
Total current assets	218,066	183,877
Long-term Investments and Receivables, Net	8,474	0
Investment at cost	1,720	0
Property and equipment, net	155	272
Patents, net	94,716	162,642
Other assets	365	1,110
Total assets	323,496	347,901
Current liabilities:
Accounts payable and accrued expenses	22,688	17,347
Accrued patent investment costs	225	1,000
Royalties and contingent legal fees payable	25,009	14,878
Total current liabilities	47,922	33,225
Deferred income taxes	210	210
Other liabilities	362	311
Total liabilities	48,494	33,746
Commitments and contingencies (Note 6)
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; 50,460,880 and 50,651,239 shares issued and outstanding as of September 30, 2016 and December 31, 2015, respectively	50	51
Treasury stock, at cost, 1,729,408 shares as of September 30, 2016 and December 31, 2015	(34,640)	(34,640)
Additional paid-in capital	639,118	633,146
Accumulated comprehensive loss	(59)	(215)
Accumulated deficit	(331,587)	(288,131)
Total Acacia Research Corporation stockholders' equity	272,882	310,211
Noncontrolling interests in operating subsidiaries	2,120	3,944
Total stockholders' equity	275,002	314,155
Total liabilities and stockholders' equity	$ 323,496	$ 347,901