Current Expected Credit Losses (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 2,401	$ 3,460
Current period (release) provision for expected credit losses	(26)	832
Write-offs	(112)	(1,894)
Recoveries of amounts previously written-off	0	3
Balance at end of period	$ 2,263	$ 2,401