Supplemental Cash Flow Information	12 Months Ended
Supplemental Cash Flow Information	Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information ARI received interest income of $2.7 million, $3.3 million and $3.5 million for the years ended December 31, 2013, 2012 and 2011, respectively. ARI paid interest expense, net of capitalized interest, of $11.1 million, $20.5 million and $20.6 million for the years ended December 31, 2013, 2012 and 2011, respectively. ARI paid $17.0 million of taxes, net of refunds, for the year ended December 31, 2013 and received net tax refunds of $0.8 million and $14.4 million for the years ended December 31, 2012 and 2011. ARI paid $8.2 million, $5.8 million and $2.0 million to employees related to SARs exercises during the years ended December 31, 2013, 2012 and 2011, respectively.

The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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