| SUMMARY CONSOLIDATED CASH FLOWS | |||||||||||||||
| (dollars in thousands) | |||||||||||||||
| (unaudited) | |||||||||||||||
|
For the Three Months
Ended December 31, |
For the Year Ended
December 31, | ||||||||||||||
| 2015 | 2014 | 2015 | 2014 | ||||||||||||
| Income before income taxes | $ | 46,896 | $ | 20,589 | $ | 181,015 | $ | 153,528 | |||||||
| Taxes paid | (41,947 | ) | (28,836 | ) | (85,780 | ) | (114,876 | ) | |||||||
| Non-cash expenses | 23,986 | 19,779 | 83,999 | 72,324 | |||||||||||
| Increase in deferred revenue | 22,910 | 2,013 | 113,962 | 272,885 | |||||||||||
| Deferred revenue recognized | (37,396 | ) | (43,989 | ) | (163,354 | ) | (163,139 | ) | |||||||
| Increase (decrease) in operating working capital, deferred charges and other | 72,328 | 86,428 | (15,343 | ) | 21,291 | ||||||||||
| Capital spending and capitalized patent costs | (7,625 | ) | (12,506 | ) | (33,466 | ) | (39,027 | ) | |||||||
| FREE CASH FLOW | 79,152 | 43,478 | 81,033 | 202,986 | |||||||||||
| Tax benefit from share-based compensation | 331 | (1,218 | ) | 2,457 | — | ||||||||||
| Acquisition of patents | — | — | (20,000 | ) | (26,300 | ) | |||||||||
| Purchase of long-term investments | (6,029 | ) | — | (12,623 | ) | — | |||||||||
| Proceeds from noncontrolling interests | 6,808 | 1,276 | 9,358 | 5,101 | |||||||||||
| Dividends paid | (7,093 | ) | (7,609 | ) | (28,937 | ) | (23,729 | ) | |||||||
| Share repurchases | (7,358 | ) | (64,603 | ) | (96,410 | ) | (152,625 | ) | |||||||
| Proceeds from other financing activities | — | — | 4,500 | — | |||||||||||
| Proceeds from issuance of convertible senior notes | — | — | 316,000 | — | |||||||||||
| Purchase of convertible bond hedge | — | — | (59,376 | ) | — | ||||||||||
| Proceeds from issuance of warrants | — | — | 42,881 | — | |||||||||||
| Payment of debt issuance costs | — | — | (9,403 | ) | — | ||||||||||
| Net proceeds from exercise of stock options | 17 | 33 | 46 | 402 | |||||||||||
| Unrealized gain (loss) on short-term investments | 436 | (121 | ) | 254 | (358 | ) | |||||||||
| NET INCREASE (DECREASE) IN CASH AND SHORT-TERM INVESTMENTS | $ | 66,264 | $ | (28,764 | ) | $ | 229,780 | $ | 5,477 | ||||||
