Inventory	6 Months Ended
Jun. 30, 2018
Inventory Disclosure [Abstract]
Inventory	Inventory Current inventory at June 30, 2018 and December 31, 2017, of $3.9 million and $4.4 million, respectively, consisted primarily of spare parts and small equipment held for use in the ordinary course of business. Non-current inventory at June 30, 2018 and December 31, 2017 of $4.8 million and $4.9 million, respectively, consisted primarily of spare engine components or items which require longer lead times for sourcing or fabrication for certain of the Company's assets to reduce equipment downtime.

Inventory

6 Months Ended

Jun. 30, 2018

Current inventory at June 30, 2018 and December 31, 2017, of $3.9 million and $4.4 million, respectively, consisted primarily of spare parts and small equipment held for use in the ordinary course of business.

Non-current inventory at June 30, 2018 and December 31, 2017 of $4.8 million and $4.9 million, respectively, consisted primarily of spare engine components or items which require longer lead times for sourcing or fabrication for certain of the Company's assets to reduce equipment downtime.