Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2014

Related Party Transactions [Abstract]

Condensed Financial Statements

Summarized financial information for the Unconsolidated Mines is as follows:

	2014		2013		2012
Statement of Operations
Revenues	$	579,031	$	577,436	$	543,892
Gross profit	$	74,244	$	74,870	$	74,542
Income before income taxes	$	48,592	$	47,953	$	46,819
Net income	$	37,067	$	37,468	$	35,616
Balance Sheet
Current assets	$	143,105	$	147,370
Non-current assets	$	781,475	$	737,851
Current liabilities	$	177,659	$	148,264
Non-current liabilities	$	742,938	$	731,525