Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v3.19.1
Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Accounts receivable $ 6,882 $ 9,295
Less allowances for doubtful accounts (3,276) (3,089)
Balance $ 3,606 $ 6,206