Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.19.1
Subsequent Events (Details) - Subsequent Event - USD ($)
$ in Millions
1 Months Ended 2 Months Ended
Feb. 05, 2019
Feb. 28, 2019
Mar. 31, 2019
Subsequent Event [Line Items]      
Workforce reduction, estimated annual savings $ 20.0    
Scenario, Forecast      
Subsequent Event [Line Items]      
Workforce reduction, percentage     15.00%
Workforce reduction expected expense     $ 4.5
Wireless Maritime Services      
Subsequent Event [Line Items]      
Note payable to WMS   $ 7.4  
Related party transaction, rate   6.50%