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Other Liabilities - Schedule of Changes in Liability for Legal Fees and Settlements (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Other Liabilities Disclosure [Abstract]        
Beginning balance $ 53,072 $ 54,295 $ 62,763 $ 51,057
Net accrual (reversal of accrual) for probable losses 1,866 995 770 10,777
Payments (11,667) (460) (22,174) (8,103)
Issuance of common stock in settlement of litigation 0 0 0 (5,719)
Net increase (decrease) in accrued legal fees (4,312) (1,450) (2,464) 3,282
Other 0 0 64 2,086
Ending balance $ 38,959 $ 53,380 $ 38,959 $ 53,380