Receivables (Tables)

12 Months Ended

Dec. 31, 2015

Accounts Receivable, Net, Current [Abstract]

Schedule Of Trade Accounts Receivables Net

Accounts receivable – trade, net consisted of the following:

	December 31,
	2015			2014
Accounts receivable - trade	$	220,978		$	274,502
Allowance for doubtful accounts	(1,446		)	(2,973		)
Accounts receivable - trade, net	$	219,532		$	271,529

Schedule Of Allowance For Doubtful Accounts

The following table presents the activity of our allowance for doubtful accounts for the periods indicated:

	December 31,
	2015			2014		2013
Balance at beginning of period	$	2,973		$	1,526	$	2,372
(Credited) charged to costs and expenses	1,242			1,447		(86		)
Amounts written off	(2,769		)	—		(760		)
Balance at end of period	$	1,446		$	2,973	$	1,526