Quarterly report pursuant to Section 13 or 15(d)

Closure Costs (Details)

v3.19.1
Closure Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Closure Costs    
Closure costs, expected amount $ 6,900  
Closure costs 200 $ 6,700
USI    
Closure Costs    
Closure Costs Liability, Beginning of Period 3,366  
Closure Costs Incurred for the Period 239  
Cash Payments for the Period (2,406)  
Non-cash adjustments for the period 110  
Closure Costs Liability, Ending Balance 1,309 3,366
USI | Severance    
Closure Costs    
Closure Costs Liability, Beginning of Period 3,065  
Closure Costs Incurred for the Period 239  
Cash Payments for the Period (2,357)  
Non-cash adjustments for the period (119)  
Closure Costs Liability, Ending Balance 828 3,065
USI | Lease abandonment    
Closure Costs    
Closure Costs Liability, Beginning of Period 301  
Cash Payments for the Period (49)  
Non-cash adjustments for the period 229  
Closure Costs Liability, Ending Balance $ 481 $ 301