Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2018

COMMITMENTS AND CONTINGENCIES [Abstract]

Future Minimum Contractual Obligations

	Amount
2019	$                              22,970
2020	1,630
2021	2,172
2022	2,172
2023	2,104
2024 and thereafter	12,739
	$43,787