RESTRICTED INVESTMENTS AND BOND COLLATERAL (Tables)

9 Months Ended

Sep. 30, 2016

Disclosure Restricted Investments and Bond Collateral [Abstract]

Carrying value and estimated fair value of restricted investments and bond collateral

The Company’s carrying value and estimated fair value of its restricted investments at September 30, 2016 were as follows:

	Restricted Investments and Bond Collateral		Reclamation Deposits		Total Restricted Investments
	(In thousands)
Cash and cash equivalents	$	64,307	$	2,309	$	66,616
Time deposits	2,470		—		2,470
Available-for-sale	77,677		71,734		149,411
	$	144,454	$	74,043	$	218,497

The Company’s carrying value and estimated fair value of its restricted investments at December 31, 2015 were as follows:

	Restricted Investments and Bond Collateral		Reclamation Deposits		Total Restricted Investments
	(In thousands)
Cash and cash equivalents	$	102,539	$	45,819	$	148,358
Time deposits	2,455		—		2,455
Available-for-sale	35,813		31,545		67,358
	$	140,807	$	77,364	$	218,171

Amortized cost, gross unrealized holding gains and losses and fair value of available-for-sale securities

The cost basis, gross unrealized holding gains and losses, and fair value of available-for-sale securities at September 30, 2016 were as follows:

	Restricted Investments and Bond Collateral			Reclamation Deposits			Total Restricted Investments
	(In thousands)
Cost basis	$	78,410		$	72,068		$	150,478
Gross unrealized holding gains	273			551			824
Gross unrealized holding losses	(1,006		)	(885		)	(1,891		)
Fair value	$	77,677		$	71,734		$	149,411

The cost basis, gross unrealized holding gains and losses, and fair value of available-for-sale securities at December 31, 2015 were as follows:

	Restricted Investments and Bond Collateral			Reclamation Deposits			Total Restricted Investments
	(In thousands)
Cost basis	$	36,715		$	31,977		$	68,692
Gross unrealized holding gains	167			521			688
Gross unrealized holding losses	(1,069		)	(953		)	(2,022		)
Fair value	$	35,813		$	31,545		$	67,358