Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table summarizes the Company's assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2015 and December 31, 2014:

	Asset (Liability) as of June 30, 2015
(in thousands)	Total			Level 1		Level 2			Level 3
Investment in associated company	$	29,529		$	29,529	$	—		$	—
Precious metal and commodity inventories recorded at fair value	$	13,195		$	13,195	$	—		$	—
Commodity contracts on precious metal and commodity inventories	$	846		$	—	$	846		$	—
Interest rate swap agreements	$	(103	)	$	—	$	(103	)	$	—

	Asset (Liability) as of December 31, 2014
(in thousands)	Total			Level 1		Level 2			Level 3
Investment in associated company	$	23,936		$	23,936	$	—		$	—
Precious metal and commodity inventories recorded at fair value	$	13,249		$	13,249	$	—		$	—
Commodity contracts on precious metal and commodity inventories	$	764		$	764	$	—		$	—
Interest rate swap agreements	$	(138	)	$	—	$	(138	)	$	—