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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parentheticals) - USD ($)
$ in Thousands
Sep. 30, 2018
Sep. 30, 2017
Current assets:    
Cash and cash equivalents $ 150,274 $ 201,226
Restricted cash (included in other current assets) 827 1,427
Total cash, cash equivalents and restricted cash $ 151,101 $ 202,653