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FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Dec. 31, 2017
Fair Value Disclosures [Abstract]  
Assets measured at fair value on a nonrecurring basis
Assets measured at fair value on a nonrecurring basis at December 31, 2017 and 2016, respectively, are set forth below:
 
 
 
Estimated fair value measurements
 
 
 
Balance
 
Quoted prices in
active market
(Level 1)
 
Significant other
observable inputs
(Level 2)
 
Significant other
unobservable inputs
(Level 3)
 
Total gains
(losses)
($ in thousands):
 
 
 
 
 
 
 
 
 
2017:
 
 
 
 
 
 
 
 
 
Property and equipment, net
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Goodwill
$
—

 
$
—

 
$
—

 
$
—

 
$
—

2016:
 
 
 
 
 
 
 
 
 
Property and equipment, net
$
8,700

 
$
—

 
$
8,700

 
$
—

 
$
(6,305
)
Goodwill
$
9,425

 
$
—

 
$
—

 
$
9,425

 
$
(1,177
)