Supplemental Information (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Text Block Supplement [Abstract]

Schedule of Allowance for Doubtful Accounts

Allowance for Doubtful Accounts

	2018			2017			2016
Balance at beginning of period	$	3,853		$	2,591		$	2,138
Bad debt expense		2,480			1,480			1,089
Write-offs, net of recoveries		(1,027	)		(219	)		(635	)
Effect of foreign currency translation		(22	)		1			(1	)
Balance at end of period	$	5,284		$	3,853		$	2,591

Schedule of Income Tax Valuation Allowance

Income Tax Valuation Allowance

	2018		2017		2016
Balance at beginning of period	$	1,636	$	1,131	$	933
Provision for income taxes - valuation allowance		3,476		505		198
Balance at end of period	$	5,112	$	1,636	$	1,131