| Schedule of changes in the carrying amount of goodwill |
The changes in the carrying amount of goodwill for the fiscal years ended December 31, 2013 and 2012 are as follows (in thousands): | | | | | | Goodwill | Balance as of December 31, 2011 | $ | 24,416 |
| Acquisitions | 6,791 |
| Balance as of December 31, 2012 | $ | 31,207 |
| Acquisitions | — |
| Balance as of December 31, 2013 | $ | 31,207 |
|
|
| Schedule of intangible assets |
Intangible assets consisted of the following as of December 31, 2013 and 2012 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2012 Cost | | December 31, 2012 Net | | Additions | | Amortization Expense | | December 31, 2013 Net | | Weighted Average Amortization Period (Years) | Developed technology | $ | 20,576 |
| | $ | 12,384 |
| | $ | 611 |
| | $ | (3,326 | ) | | $ | 9,669 |
| | 4.3 | Customer relationships | 8,154 |
| | 4,952 |
| | — |
| | (876 | ) | | 4,076 |
| | 4.9 | Tradenames | 1,522 |
| | 1,040 |
| | — |
| | (212 | ) | | 828 |
| | 5.2 | Favorable lease | 40 |
| | 1 |
| | 13 |
| | (14 | ) | | — |
| | N/A | Patents and licenses | 3,059 |
| | 2,744 |
| | — |
| | (351 | ) | | 2,393 |
| | 7.6 | Other | 142 |
| | 75 |
| | — |
| | (46 | ) | | 29 |
| | 0.5 | Total | $ | 33,493 |
| | $ | 21,196 |
| | $ | 624 |
| | $ | (4,825 | ) | | $ | 16,995 |
| | |
| | | | | | | | | | | | | | | | | | | | | | | | December 31,
2011 Cost | | December 31,
2011 Net | | Additions | | Amortization
Expense | | December 31,
2012 Net | | Weighted
Average
Amortization
Period (Years) | Developed technology | $ | 15,179 |
| | $ | 10,626 |
| | $ | 5,397 |
| | $ | (3,639 | ) | | $ | 12,384 |
| | 5.1 | Customer relationships | 6,884 |
| | 4,542 |
| | 1,270 |
| | (860 | ) | | 4,952 |
| | 5.8 | Tradenames | 1,202 |
| | 942 |
| | 320 |
| | (222 | ) | | 1,040 |
| | 5.9 | Favorable lease | 40 |
| | 14 |
| | — |
| | (13 | ) | | 1 |
| | 0.0 | Patents and licenses | 1,525 |
| | 1,522 |
| | 1,534 |
| | (312 | ) | | 2,744 |
| | 8.4 | Other | 142 |
| | 123 |
| | — |
| | (48 | ) | | 75 |
| | 1.5 | Total | $ | 24,972 |
| | $ | 17,769 |
| | $ | 8,521 |
| | $ | (5,094 | ) | | $ | 21,196 |
| | |
|
| Schedule of future expected amortization |
Total future expected amortization is as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | Developed Technology | | Customer Relationships | | Tradenames | | Patents and Licenses | | Other | Year Ending December 31: | | | | | | | | | | 2014 | $ | 2,524 |
| | $ | 873 |
| | $ | 179 |
| | $ | 349 |
| | $ | 29 |
| 2015 | 2,118 |
| | 873 |
| | 179 |
| | 343 |
| | — |
| 2016 | 2,123 |
| | 876 |
| | 151 |
| | 344 |
| | — |
| 2017 | 1,813 |
| | 768 |
| | 142 |
| | 343 |
| | — |
| 2018 | 1,082 |
| | 502 |
| | 100 |
| | 313 |
| | — |
| 2019 and beyond | 9 |
| | 184 |
| | 77 |
| | 701 |
| | — |
| Total expected amortization expense | $ | 9,669 |
| | $ | 4,076 |
| | $ | 828 |
| | $ | 2,393 |
| | $ | 29 |
|
|