Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Unbilled receivables	$ 5,100				$ 4,500				$ 5,100	$ 4,500
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction to retained earnings	334,319				233,299				334,319	233,299
Net revenues	90,588	$ 52,210	$ 77,846	$ 88,105	$ 82,102	$ 83,286	$ 76,742	$ 83,709	308,749	325,839	$ 402,361
ASU 2016-02 | Accumulated deficit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction to retained earnings												$ 3,600
Impacts of the New Revenue Standard | ASU 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction to retained earnings											10,100
Net revenues										$ 29,367
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment, useful life										3 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment, useful life										5 years
Contract Acquisition Costs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Capitalized contract cost											$ 700
Amortization capitalized contract cost									200
Impairment capitalized contract cost									0
Contract Fulfillment Costs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Capitalized contract cost	$ 5,100								$ 5,100