Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019		$ 464
Cumulative Effect, Period Of Adoption, Adjusted Balance [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019	$ 1,715	887
Charges to expense	956
Uncollected balances written off, net of recoveries	(128)
Balance at June 30, 2020	$ 1,715
Cumulative Effect, Period Of Adoption, Adjustment [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at December 31, 2019		$ 423