Receivables (Tables)

12 Months Ended

Dec. 31, 2013

Accounts Receivable, Net, Current [Abstract]

Schedule Of Trade Accounts Receivables Net

	December 31,
	2013			2012
Accounts receivable - trade	$	369,559		$	273,297
Allowance for doubtful accounts	(1,526		)	(2,372		)
Accounts receivable - trade, net	$	368,033		$	270,925

Schedule Of Allowance For Doubtful Accounts

	December 31,
	2013			2012			2011
Balance at beginning of period	$	2,372		$	1,044		$	1,307
(Credited) charged to costs and expenses	(86		)	2,096			373
Amounts written off	(760		)	(768		)	(636		)
Balance at end of period	$	1,526		$	2,372		$	1,044