Quarterly report pursuant to Section 13 or 15(d)

Exit Activities (Detail)

v3.7.0.1
Exit Activities (Detail)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2016
Predecessor [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring and Related Cost, Number of Positions Eliminated   28 53
Severance and Termination Benefits $ 700 $ 1,100  
Liabilities Subject to Compromise, Early Contract Termination Fees   1,300  
Payments for Restructuring   1,100  
Restructuring Reserve, Accretion of Obligation   $ 317  
Successor [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance and Termination Adjustment 100    
Restructuring Reserve, Accretion of Obligation $ 0