Annual report pursuant to Section 13 and 15(d)

Closure Costs (Details)

v3.19.3.a.u2
Closure Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 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 3,366  
Closure Costs Incurred for the Period   239  
Cash Payments for the Period   (3,432)  
Non-Cash Adjustments for the period   157  
Closure Costs Liability, Ending Balance   330 3,366
USI | Severance      
Closure Costs      
Closure Costs Liability, Beginning of Period 3,065 3,065  
Closure Costs Incurred for the Period   239  
Cash Payments for the Period   (3,232)  
Non-Cash Adjustments for the period   (72)  
Closure Costs Liability, Ending Balance     3,065
USI | Lease abandonment      
Closure Costs      
Closure Costs Liability, Beginning of Period $ 301 301  
Cash Payments for the Period   (200)  
Non-Cash Adjustments for the period   229  
Closure Costs Liability, Ending Balance   $ 330 $ 301