Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Allowance for Doubtful Accounts

The following presents the changes in the balance of our allowance for doubtful accounts:

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Year Ended	Item	Balance at beginning of year		Additions charged to expense		Other		Balance at end of year
2019	Allowance for doubtful accounts	$	8,423	$	1,308	$	(969)	$	8,762
2018	Allowance for doubtful accounts	10,258		1,824		(3,659)		8,423
2017	Allowance for doubtful accounts	12,920		1,051		(3,713)		10,258