Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Additional Information (Detail)

v3.10.0.1
Shareholders' Equity - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Sep. 13, 2016
Sep. 12, 2016
Class of Stock [Line Items]          
Preferred stock, shares authorized 5,000,000 5,000,000      
Common stock, shares issued 15,080,594 15,018,870   14,992,018 14,992,018
Common stock, par value $ 0.01 $ 0.01   $ 0.01 $ 12.73
Common stock, shares authorized 45,000,000 45,000,000      
Successor [Member]          
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]          
Accumulated other comprehensive losses attributable to pension and postretirement benefit obligations, net of tax $ 82 $ 0 $ 73    
Predecessor [Member]          
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]          
Accumulated other comprehensive losses attributable to pension and postretirement benefit obligations, net of tax         $ 61