Receivables (Tables)

6 Months Ended

Jun. 30, 2018

Receivables [Abstract]

Schedule of Activity in Allowance for Doubtful Accounts

Activity in the allowance for doubtful accounts for the three month and six month periods ended June 30, 2018 and 2017 was as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Beginning Balance	$	38,557		$	29,662		$	23,746		$	16,386
Bad debt expense, net of recoveries		666			180			16,618			13,831
Charge-offs, foreign currency translation and other    adjustments		(4,267	)		(4,748	)		(5,408	)		(5,123	)
Ending Balance	$	34,956		$	25,094		$	34,956		$	25,094