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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
Schedule II-Valuation and Qualifying Accounts
Balance at Beginning of Year
Net Increase (Decrease) to Expense (2)
Acquisitions and Other
Balance at End of Year
(in thousands)
TAX VALUATION ALLOWANCE:
Year ended December 31, 2020$206,394 $5,749 $— $212,143 
Year ended December 31, 2019
216,468 (10,074)— 206,394 
Year ended December 31, 2018 (1)
238,703 (7,727)(14,508)216,468 
(1)During the year ended December 31, 2019, we updated our net operating losses to remove deferred tax assets that could never be utilized due to IRC Section 382 limitations. The amount of Net Increase (Decrease) to Expense, Acquisitions and Other and Balance at End of Year for the year ended December 31, 2018 have been updated from $3.8 million, $14.5 million and $228.0 million previously reported to reflect that change.
(2)For the years ended December 31, 2020, 2019 and 2018, Net Increase (Decrease) to Expense includes foreign currency translation gains (losses) of $10.2 million, $(1.5) million and $(2.3) million.