|
Property and Equipment (Details) (USD $)
In Thousands, unless otherwise specified |
Jun. 30, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Components of property and equipment | ||
| Total, at cost | $ 934,017 | $ 844,652 |
| Less accumulated depreciation | (274,097) | (249,528) |
| Property and equipment, net | 659,920 | 595,124 |
|
Land [Member]
|
||
| Components of property and equipment | ||
| Total, at cost | 161,731 | 142,730 |
|
Building and improvements [Member]
|
||
| Components of property and equipment | ||
| Total, at cost | 516,450 | 476,846 |
|
Office equipment and fixtures [Member]
|
||
| Components of property and equipment | ||
| Total, at cost | 122,986 | 115,509 |
|
Parts and service equipment [Member]
|
||
| Components of property and equipment | ||
| Total, at cost | 66,621 | 62,678 |
|
Company vehicles [Member]
|
||
| Components of property and equipment | ||
| Total, at cost | 8,062 | 7,750 |
|
Construction in progress [Member]
|
||
| Components of property and equipment | ||
| Total, at cost | $ 58,167 | $ 39,139 |