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PREPAIDS AND OTHER ASSETS (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
PREPAIDS AND OTHER ASSETS    
Prepaid maintenance $ 6,494 $ 6,995
Investment in precious metals 3,055 1,657
Prepaid other 2,148 2,592
Prepaid advertising 1,200 1,407
Total prepaids and other assets $ 12,897 $ 12,651