15. OTHER LIABILITIES
Other liabilities consisted of the following:
| (in thousands) | As of December 31, | |||||||
| 2013 | 2012 | |||||||
Liability for pension and post employment benefits | $ | 64,952 | $ | 92,758 | ||||
Deferred compensation | 36,667 | 27,940 | ||||||
Liability for uncertain tax positions | 80,898 | 63,182 | ||||||
Other | 40,851 | 53,522 | ||||||
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Other liabilities (less current portion) | $ | 223,368 | $ | 237,402 | ||||
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The “Other” caption in the table above for 2013 and 2012 includes $31.4 million and $42.8 million, respectively, of obligations recognized for the purchase of intangible assets. The “Other” caption also includes the estimated fair value of the Real Gravity contingent consideration liability for $8.3 million and $9.7 million at December 31, 2013 and 2012.