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RESTRICTED INVESTMENTS AND BOND COLLATERAL
 3 Months Ended
Mar. 31, 2017
Disclosure Restricted Investments and Bond Collateral [Abstract]  
RESTRICTED INVESTMENTS AND BOND COLLATERAL
5. RESTRICTED INVESTMENTS AND BOND COLLATERAL
The Company invests certain bond collateral, reclamation deposits, and other restricted investments in a limited selection of fixed-income investment options and receives the corresponding investment returns. These investments are not available to meet the Company’s general cash needs. These accounts include available-for-sale securities. Available-for-sale securities are reported at fair value with unrealized gains and losses excluded from earnings and reported in Accumulated other comprehensive loss.
The Company’s carrying value and estimated fair value of its restricted investments at March 31, 2017 were as follows:
 
Restricted Investments and Bond Collateral
 
Reclamation Deposits
 
Total Restricted Investments
 
(In thousands)
Cash and cash equivalents
$
63,989

 
$
2,873

 
$
66,862

Time deposits
2,473

 
—

 
2,473

Available-for-sale
79,180

 
72,638

 
151,818

 
$
145,642

 
$
75,511

 
$
221,153

The Company’s carrying value and estimated fair value of its restricted investments at December 31, 2016 were as follows:
 
Restricted Investments and Bond Collateral
 
Reclamation Deposits
 
Total Restricted Investments
 
(In thousands)
Cash and cash equivalents
$
66,860

 
$
2,673

 
$
69,533

Time deposits
2,473

 
—

 
2,473

Available-for-sale
75,580

 
71,689

 
147,269

 
$
144,913

 
$
74,362

 
$
219,275


Available-for-Sale Restricted Investments
The cost basis, gross unrealized holding gains and losses, and fair value of available-for-sale securities at March 31, 2017 were as follows:
 
Restricted Investments and Bond Collateral
 
Reclamation Deposits
 
Total Restricted Investments
 
(In thousands)
Cost basis
$
79,767

 
$
72,915

 
$
152,682

Gross unrealized holding gains
394

 
622

 
1,016

Gross unrealized holding losses
(981
)
 
(899
)
 
(1,880
)
Fair value
$
79,180

 
$
72,638

 
$
151,818

The cost basis, gross unrealized holding gains and losses, and fair value of available-for-sale securities at December 31, 2016 were as follows:
 
Restricted Investments and Bond Collateral
 
Reclamation Deposits
 
Total Restricted Investments
 
(In thousands)
Cost basis
$
76,558

 
$
72,381

 
$
148,939

Gross unrealized holding gains
251

 
453

 
704

Gross unrealized holding losses
(1,229
)
 
(1,145
)
 
(2,374
)
Fair value
$
75,580

 
$
71,689

 
$
147,269