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INVESTMENTS (Tables)
 12 Months Ended
Dec. 31, 2018
Schedule of Investments [Abstract]  
Summary of Investments in Nonconsolidated Affiliates and Available-for-sale Securities
The following table summarizes the Company's investments in nonconsolidated affiliates and other securities:
(In thousands)
Notes Receivable
 
Equity Method Investments
 
Other Investments
 
Marketable Equity Securities
 
Total Investments
Balance at December 31, 2016
$
132

 
$
14,477

 
$
71,666

 
$
1,715

 
$
87,990

Cash contributions
—

 
2,248

 
—

 
—

 
2,248

Acquisitions
13,602

 
10,361

 
11,560

 
—

 
35,523

Equity in loss
—

 
(2,855
)
 
—

 
—

 
(2,855
)
Disposals
(188
)
 
—

 
(628
)
 
—

 
(816
)
Foreign currency translation adjustment
—

 
145

 
380

 
243

 
768

Distributions received
—

 
(775
)
 
—

 
—

 
(775
)
Impairment of investments
(671
)
 
—

 
(4,202
)
 
—

 
(4,873
)
Unrealized holding loss on marketable securities
—

 
—

 
—

 
(414
)
 
(414
)
Other
917

 
794

 
—

 
—

 
1,711

Balance at December 31, 2017
$
13,792

 
$
24,395

 
$
78,776

 
$
1,544

 
$
118,507

Cash advances
—

 
1,051

 
—

 
—

 
1,051

Acquisitions
15,076

 
3,732

 
4,550

 
—

 
23,358

Equity in earnings
—

 
1,020

 
—

 
—

 
1,020

Disposals
(728
)
 
(33
)
 
(28,826
)
 
—

 
(29,587
)
Foreign currency translation adjustment
—

 
(29
)
 
(256
)
 
(67
)
 
(352
)
Distributions received
—

 
(2,500
)
 
—

 
—

 
(2,500
)
Impairment of investments
(2,064
)
 
—

 
(14,370
)
 
—

 
(16,434
)
Fair value adjustments
—

 
—

 
4,389

 
(571
)
 
3,818

Balance at December 31, 2018
$
26,076

 
$
27,636

 
$
44,263

 
$
906

 
$
98,881