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UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2019
Mar. 31, 2018
Statement of Cash Flows [Abstract]    
Cash $ 263,188 $ 285,653
Restricted cash and equivalents:    
Debt service accounts 22,087 27,496
Other restricted cash 41,292 9,278
Total cash and restricted cash reported in the statements of cash flows $ 326,567 $ 322,427