Other Commitments (Tables)

12 Months Ended

Dec. 31, 2018

Other Commitments [Abstract]

Operating Leases of Lessee Disclosure

Year ending December 31, 2019	$	20,295
Year ending December 31, 2020		20,595
Year ending December 31, 2021		20,424
Year ending December 31, 2022		4,873
Year ending December 31, 2023		3,820
Thereafter		3,024
	$	73,031