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Restricted Cash	3 Months Ended
Restricted Cash	Mar. 31, 2018
Cash and Cash Equivalents [Abstract]
Restricted Cash	Restricted Cash As of each of March 31, 2018 and December 31, 2017, the Company’s Condensed Consolidated Balance Sheets included approximately $9.0 million in restricted cash. Restricted cash is used primarily to collateralize standby letters of credit for certain leases and insurance policies in addition to securing certain transactions as dictated by the financial institutions used by the Company.