Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical)

v3.19.3
CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2018
Sep. 30, 2018
Current assets    
Accounts receivable allowance for doubtful accounts $ 34,225 $ 41,932