7 Goodwill and Other Intangibles
The carrying amount of goodwill was $350 million and $317 million at December 31, 2013 and 2012, respectively. The Company's acquisitions increased goodwill by $31 million (see Note 6) and the effect of foreign currency translation increased goodwill by $2 million in 2013.
The Company's intangible assets included in the consolidated balance sheets are detailed as follows (in thousands):
| December 31, 2013 | December 31, 2012 | ||||||||||||||||||
| Weighted- | Weighted- | ||||||||||||||||||
| Gross | Average | Gross | Average | ||||||||||||||||
| Carrying | Accumulated | Amortization | Carrying | Accumulated | Amortization | ||||||||||||||
| Amount | Amortization | Period | Amount | Amortization | Period | ||||||||||||||
| Purchased intangibles | $ | 167,604 | $ | 105,347 | 10 | years | $ | 154,749 | $ | 94,498 | 11 | years | |||||||
| Capitalized software | 340,070 | 189,415 | 7 | years | 293,589 | 155,394 | 5 | years | |||||||||||
| Licenses | 3,909 | 3,390 | 7 | years | 7,112 | 6,361 | 6 | years | |||||||||||
| Patents and other | |||||||||||||||||||
| intangibles | 49,902 | 24,221 | 8 | years | 40,290 | 19,342 | 8 | years | |||||||||||
| Total | $ | 561,485 | $ | 322,373 | 8 | years | $ | 495,740 | $ | 275,595 | 7 | years | |||||||
During the year ended December 31, 2013, the Company acquired $11 million of purchased intangibles as a result of the acquisitions of Nonlinear Dynamics, Scarabaeus, LaserComp and ESS (see Note 6). In addition, the gross carrying value of intangible assets and accumulated amortization for intangible assets increased by $14 million and $9 million, respectively, in the year ended December 31, 2013 due to the effects of foreign currency translation. Amortization expense for intangible assets was $42 million, $31 million and $30 million for the years ended December 31, 2013, 2012 and 2011, respectively. Included in amortization expense for the year ended December 31, 2012 is a one-time $4 million charge to purchased intangibles amortization expense related to the discontinuance of a product trade name intangible asset. Amortization expense for intangible assets is estimated to be between $44 million and $49 million per year for each of the next five years. The increase in amortization expense in 2013 and for the next five years is primarily due to amortization associated with capitalized software costs related to the launch of new software product platforms in the first quarter of 2013. The carrying value of the new software platform was approximately $112 million as of December 31, 2013 and will be amortized over ten years.