Accounts Receivable Factoring (Tables)

12 Months Ended

Dec. 31, 2017

Transfers and Servicing [Abstract]

Receivables Outstanding Under Transfer Arrangements [Table Text Block]

Amounts outstanding under receivable transfer agreements entered into by various locations as of the period end were as follows:

	December 31, 2017		December 31, 2016
Off-balance sheet arrangements	$	96,588	$	56,936
On-balance sheet arrangements	$	—	$	5,258

Receivables Factored and Costs Incurred [Table Text Block]

Accounts receivable factored and related costs throughout the period were as follows:

	Off-Balance Sheet Arrangements				On-Balance Sheet Arrangements
	Year Ended December 31,				Year Ended December 31,
	2017		2016		2017		2016
Accounts receivable factored	$	544,060	$	507,321	$	23,794	$	24,053

	Off-Balance Sheet Arrangements						On-Balance Sheet Arrangements
	Year Ended December 31,						Year Ended December 31,
	2017		2016		2015		2017		2016		2015
Costs	$	1,904	$	1,575	$	2,144	$	99	$	257	$	179