Quarterly report pursuant to Section 13 or 15(d)

Exit Activities (Detail)

v3.8.0.1
Exit Activities (Detail)
$ in Thousands
1 Months Ended 8 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2016
USD ($)
Sep. 12, 2016
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Dec. 31, 2016
Predecessor [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and Related Cost, Number of Positions Eliminated         53
Severance and Termination Benefits     $ 1,900 $ 2,000  
Liabilities Subject to Compromise, Early Contract Termination Fees $ 1,300     1,300  
Payments for Restructuring       1,100  
Restructuring Reserve, Accretion of Obligation   $ 317   $ 300  
Successor [Member]          
Restructuring Cost and Reserve [Line Items]          
Severance and Termination Adjustment     100    
Restructuring Reserve, Accretion of Obligation $ 0   $ 0