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SUMMARY OF SIGNIFICANT ACCOUNTING AND BUSINESS POLICIES (Tables)
 12 Months Ended
Dec. 31, 2014
SUMMARY OF SIGNIFICANT ACCOUNTING AND BUSINESS POLICIES [Abstract]  
Schedule of Changes in Allowance
Changes in this allowance for 2014, 2013 and 2012 were as follows:

 
Year Ended December 31,
 
2014
 
2013
 
2012
Balance at beginning of year
 $                 8,798
 
 $                 7,204
 
 $                 6,202
Charged to costs and expenses
                    2,365
 
                    2,018
 
                    1,283
Charged to other accounts
                   1,1402
 
                      5602
 
                      4542
Deductions
                (3,590)1
 
                   (984)1
 
                   (735)1
Balance at end of year
 $                 8,713
 
 $                 8,798
 
 $                 7,204


(1) Uncollectible accounts written off, net of recoveries
(2) Includes allowance for doubtful accounts from acquisitions
Principal Estimated Useful Lives Used in Determining Depreciation
The principal estimated useful lives used in determining depreciation are as follows:

Buildings
20-39 years
Building improvements
10-20 years
Furniture, fixtures and equipment
3-20 years
Leasehold improvements
Shorter of estimated useful life or related lease term