Description of Business and Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning balance	$ 2,034	$ 2,492	$ 1,091
Additions	2,871	234	1,720
Deductions	(3,773)	(692)	(319)
Ending balance	$ 1,132	$ 2,034	$ 2,492
Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment of adopting ASU 2014-09				$ 396
Accounting Standards Update 2014-09 [Member] | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment of adopting ASU 2014-09				$ 396