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Property and Equipment
 12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property and Equipment

Property and equipment consisted of the following (in thousands):
December 31,
 
2017
 
2016
Land
 
$
346,680

 
$
318,832

Building and improvements
 
685,516

 
611,798

Service equipment
 
94,121

 
80,953

Furniture, office equipment, signs and fixtures
 
231,454

 
141,248

 
 
1,357,771

 
1,152,831

Less accumulated depreciation
 
(197,802
)
 
(167,300
)
 
 
1,159,969

 
985,531

Construction in progress
 
25,200

 
20,599

 
 
$
1,185,169

 
$
1,006,130



Long-lived Asset Impairment Charges
In 2015, we recorded $3.6 million of impairment charges associated with certain property and equipment. As the expected future use of these facilities and equipment changed, the long-lived assets were tested for recoverability and were determined to have a carrying value exceeding their fair value. We did not record any impairment charges associated with property and equipment in 2017 or 2016.