Weighted-average assumptions used to determine benefit obligations as of December 31, 2013, 2012 and 2011 consisted of the following:
| 2013 | 2012 | 2011 | |||||||||||||||||||
| Discount rate | 5.27% | 4.31% | 5.21% | ||||||||||||||||||
| Rate of compensation increase | 4.75% | 4.75% | 5.25% | ||||||||||||||||||
Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31, 2013, 2012 and 2011 consisted of the following:
| 2013 | 2012 | 2011 | |||||||||||||||||||
| Expected long-term return on plan assets | 7.50% | 7.75% | 8.00% | ||||||||||||||||||
| Discount rate | 4.31% | 5.21% | 5.90% | ||||||||||||||||||
| Rate of compensation increase | 4.75% | 5.25% | 5.25% | ||||||||||||||||||