Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 745,491	$ 475,056
Short-term investments	179,204	470,724
Accounts receivable, less allowances of $537 and $693	28,272	35,032
Prepaid and other current assets	63,365	43,438
Total current assets	1,016,332	1,024,250
PROPERTY AND EQUIPMENT, NET	10,217	10,051
PATENTS, NET	436,339	454,567
DEFERRED TAX ASSETS	73,168	77,225
OTHER NON-CURRENT ASSETS	76,026	60,465
Total non-current assets	595,750	602,308
TOTAL ASSETS	1,612,082	1,626,558
CURRENT LIABILITIES:
Current portion of long-term debt	94,170	0
Accounts payable	13,393	19,367
Accrued compensation and related expenses	29,162	26,838
Deferred revenue	146,654	111,672
Taxes payable	51	1,508
Dividend payable	10,746	11,627
Other accrued expenses	11,382	8,383
Total current liabilities	305,558	179,395
LONG-TERM DEBT	350,588	317,377
LONG-TERM DEFERRED REVENUE	123,653	157,634
OTHER LONG-TERM LIABILITIES	46,002	34,139
TOTAL LIABILITIES	825,801	688,545
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS’ EQUITY:
Preferred Stock, $0.10 par value, 14,399 shares authorized, 0 shares issued and outstanding	0	0
Common Stock, $0.01 par value, 100,000 shares authorized, 71,268 and 71,134 shares issued and 30,701 and 33,529 shares outstanding	712	711
Additional paid-in capital	727,402	685,512
Retained earnings	1,412,779	1,435,970
Accumulated other comprehensive loss	(74)	(2,471)
Stockholders' equity before treasury stock	2,140,819	2,119,722
Treasury stock, 40,567 and 37,605 shares of common held at cost	1,379,262	1,182,993
Total InterDigital, Inc. shareholders’ equity	761,557	936,729
Noncontrolling interest	24,724	1,284
Total equity	786,281	938,013
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 1,612,082	$ 1,626,558