2011

2010

2009

Cash operating activities:

Interest paid

$

5,253

$

6,518

$

7,986

Income taxes paid

96,487

21,526

24,893

Non-cash investing and financing activities:

Capitalized lease obligations incurred

$

8,154

$

5,468

$

3,257

Capitalized lease obligations terminated

534

721

2,376

Shares acquired and issued through exercise of stock options

5,228

5,151

73