Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions (Details)

v3.7.0.1
Related Party Transactions (Details)
$ in Millions
6 Months Ended
Jun. 30, 2017
USD ($)
Guarantor Obligations, Maximum Exposure, Undiscounted $ 0.9
Interest Expense, Related Party 0.2
Related Party Transaction, Amounts of Transaction $ 9.4
Three Point Seven Five Percentage Convertible Notes [Member]  
Debt Instrument, Interest Rate, Stated Percentage 3.75%
Restricted Stock [Member]  
Related Party Transaction, Amounts of Transaction $ 2.7
Share Distribution [Member]  
Related Party Transaction, Amounts of Transaction 6.7
Restructuring Charges [Member]  
Related Party Transaction, Amounts of Transaction 6.0
Employee Severance [Member]  
Related Party Transaction, Amounts of Transaction 0.7
Maximum [Member] | Restructuring Charges [Member]  
Related Party Transaction, Amounts of Transaction 3.0
General and Administrative Expense [Member]  
Related Party Transaction, Amounts of Transaction 3.4
SEACOR Holdings Inc. [Member]  
Guarantor Obligations, Maximum Exposure, Undiscounted $ 107.7