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Income Taxes - Changes in Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
7 Months Ended 12 Months Ended
Dec. 31, 2016
Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Balance at beginning of period $ 303 $ 267
Additions for tax positions related to the current fiscal period 8 11
Additions for tax positions related to prior years 0 188
Decreases for tax positions related to prior years (11) 0
Impact of foreign exchange fluctuation 0 10
Settlements 0 (198)
Reductions related to the expiration of statutes of limitations (33) (122)
Balance at end of period $ 267 $ 156