XML 117 R102.htm IDEA: XBRL DOCUMENT v3.7.0.1
Long-term Obligations - GMSL Capital Leases (Details)
$ in Millions
12 Months Ended
Dec. 31, 2016
vessel
lease
Dec. 31, 2015
USD ($)
Debt Instrument [Line Items]    
Number of leases | lease 2  
Number of vessels | vessel 2  
Obligations under capital leases | $   $ 52.7
Innovator Lease    
Debt Instrument [Line Items]    
Interest rate (as a percent) 10.40%  
Cable Lease    
Debt Instrument [Line Items]    
Interest rate (as a percent) 4.00%