Year ended December 31, | Nine months ended September 30, | |||||||||||||||||||||
Ratio of Earnings to Fixed Charges | 2010 | 2011 | 2012 | 2013 | 2014 | 2014 | 2015 | |||||||||||||||
Profit (loss) before income taxes | $ | 34,727 | $ | 48,730 | $ | 59,890 | $ | 59,878 | $ | 69,538 | $ | 47,997 | $ | 33,194 | ||||||||
Fixed Charges: | ||||||||||||||||||||||
Interest expense | 1,619 | 2,238 | 2,517 | 1,761 | 1,722 | 1,301 | 1,011 | |||||||||||||||
Amortization of debt expense | 318 | 660 | 203 | 183 | 193 | 137 | 231 | |||||||||||||||
Interest component of rental expense (estimated) | 5,405 | 5,792 | 5,841 | 5,958 | 6,149 | 4,641 | 4,448 | |||||||||||||||
Total Fixed Charges | 7,342 | 8,690 | 8,561 | 7,902 | 8,064 | 6,079 | 5,690 | |||||||||||||||
Profit (loss) before income taxes plus fixed charges | $ | 42,069 | $ | 57,420 | $ | 68,451 | $ | 67,780 | $ | 77,602 | $ | 54,076 | $ | 38,884 | ||||||||
Ratio of Earnings to Fixed Charges | 5.7 | 6.6 | 8.0 | 8.6 | 9.6 | 8.9 | 6.8 | |||||||||||||||