Quarterly report pursuant to Section 13 or 15(d)

Accounting Standards - Additional Information (Details)

v3.20.2
Accounting Standards - Additional Information (Details) - Accounting Standards Update 2014-09
$ in Thousands
Jan. 01, 2019
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Cumulative effect of accounting change $ 639
Accumulated deficit  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Cumulative effect of accounting change $ 639