Quarterly report pursuant to Section 13 or 15(d)

GUARANTORS OF SECURITIES (Condensed Balance Sheet) (Phantom) (Details)

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GUARANTORS OF SECURITIES (Condensed Balance Sheet) (Phantom) (Details) - USD ($)
$ / shares in Units, $ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Guarantees [Abstract]    
Allowance for doubtful accounts, trade receivables $ 1,999 $ 1,955
Allowance for doubtful accounts, other receivables $ 0 $ 437
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 60,000,000 60,000,000
Common stock, shares outstanding (in shares) 20,499,050 20,371,672
Treasury shares (in shares) 151,193 18,609