Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies- Consolidated statements of cash flows (Detail)

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Summary of Significant Accounting Policies- Consolidated statements of cash flows (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cash and cash equivalents $ 65,508 $ 94,952  
Restricted cash 16,074 16,006  
Total cash, cash equivalents and restricted cash $ 81,582 $ 110,958 $ 82,106