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Segments and Major Customers (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Financial information of business segments |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 73,422 | $ 73,294 | $ 57,919 | $ 66,866 | $ 57,443 | $ 57,530 | $ 56,215 | $ 62,863 | $ 271,501 | $ 234,051 | $ 312,363
Gain from settlement |  |  |  |  |  |  |  |  | 535 | 0 | 6,200
Other adjustment from revenue to CLI |  |  |  |  |  |  |  |  | 9,554 | 12,665 | (750)
Customer licensing income |  |  |  |  |  |  |  |  | 281,590 | 246,716 | 317,813
Segment operating expenses |  |  |  |  |  |  |  |  | 106,118 | 98,400 | 84,072
Segment operating income (loss) |  |  |  |  |  |  |  |  | 175,472 | 148,316 | 233,741
Operating income (loss) | 6,214 | 9,065 | 5,744 | 1,441 | (4,027) | (47,100) | (21,749) | (17,558) | 22,464 | (90,434) | (1,536)
Interest and other income (expense), net |  |  |  |  |  |  |  |  | (34,481) | (27,451) | (24,265)
Income (Loss) before income taxes |  |  |  |  |  |  |  |  | (12,017) | (117,885) | (25,801)
MID |  |  |  |  |  |  |  |  |  |  |
Financial information of business segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 232,040 | 215,047 | 292,074
Gain from settlement |  |  |  |  |  |  |  |  | 535 | 0 | 6,200
Other adjustment from revenue to CLI |  |  |  |  |  |  |  |  | 5,000 | 7,500 | (3,000)
Customer licensing income |  |  |  |  |  |  |  |  | 237,575 | 222,547 | 295,274
Segment operating expenses |  |  |  |  |  |  |  |  | 33,764 | 37,353 | 45,670
Segment operating income (loss) |  |  |  |  |  |  |  |  | 203,811 | 185,194 | 249,604
CRI |  |  |  |  |  |  |  |  |  |  |
Financial information of business segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 32,625 | 17,808 | 17,353
Gain from settlement |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other adjustment from revenue to CLI |  |  |  |  |  |  |  |  | 2,304 | 5,165 | 2,250
Customer licensing income |  |  |  |  |  |  |  |  | 34,929 | 22,973 | 19,603
Segment operating expenses |  |  |  |  |  |  |  |  | 24,149 | 13,611 | 5,606
Segment operating income (loss) |  |  |  |  |  |  |  |  | 10,780 | 9,362 | 13,997
CTO |  |  |  |  |  |  |  |  |  |  |
Financial information of business segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain from settlement |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other adjustment from revenue to CLI |  |  |  |  |  |  |  |  | 0 | 0 | 0
Customer licensing income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Segment operating expenses |  |  |  |  |  |  |  |  | 25,703 | 28,106 | 17,771
Segment operating income (loss) |  |  |  |  |  |  |  |  | (25,703) | (28,106) | (17,771)
All Other |  |  |  |  |  |  |  |  |  |  |
Financial information of business segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 6,836 | 1,196 | 2,936
Gain from settlement |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other adjustment from revenue to CLI |  |  |  |  |  |  |  |  | 2,250 | 0 | 0
Customer licensing income |  |  |  |  |  |  |  |  | 9,086 | 1,196 | 2,936
Segment operating expenses |  |  |  |  |  |  |  |  | 22,502 | 19,330 | 15,025
Segment operating income (loss) |  |  |  |  |  |  |  |  | (13,416) | (18,134) | (12,089)
Reconciling items |  |  |  |  |  |  |  |  |  |  |
Financial information of business segments |  |  |  |  |  |  |  |  |  |  |
Operating income (loss) |  |  |  |  |  |  |  |  | $ (153,008) | $ (238,750) | $ (235,277)

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