Accounts Receivable - Summary of Allowance for Doubtful Accounts Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ (145)	$ (163)
Additions Charged to Expense	(56)	(143)
Charged to Other Accounts	(24)	5
Write-offs	138	156
Balance at End of Period	$ (87)	$ (145)