Summary of Significant Accounting Policies (Tables)
|12 Months Ended|
Dec. 31, 2017
|Accounting Policies [Abstract]|
|Schedule of Cash and Cash Equivalents||
The following table provides a reconciliation of cash, cash equivalents, and restricted cash from the consolidated balance sheets to the consolidated statements of cash flows for the years ended December 31, 2017, 2016 and 2015 ($ in thousands).