Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Direct Financing Lease, Revenue	$ 3,937	$ 2,646	$ 12,517	$ 2,646
Total Revenues	633,996	545,922	1,891,399	1,475,111
Expenses:
Cost of Goods and Services Sold	468,871	398,252	1,377,092	1,087,357
Operating	64,835	62,666	224,871	188,095
General and administrative	21,904	38,389	71,267	86,920
Depreciation and amortization	53,598	50,135	155,889	100,336
Loss (gain) on disposal or impairment, net	(383)	41,625	(2,125)	43,801
Total expenses	608,825	591,067	1,826,994	1,506,509
Earnings from equity method investments	14,528	17,367	41,493	52,211
Operating income (loss)	39,699	(27,778)	105,898	20,813
Other expenses (income), net:
Interest expense	35,318	32,711	113,683	60,055
Loss on early extinguishment of debt	0	0	0	19,930
Foreign currency transaction loss (gain)	(983)	(747)	4,625	(1,758)
Other income, net	(400)	(3,390)	(1,883)	(4,116)
Total other expenses, net	33,935	28,574	116,425	74,111
Income (loss) before income taxes	5,764	(56,352)	(10,527)	(53,298)
Income tax expense (benefit)	(2,697)	(37,249)	16,773	(33,529)
Net income (loss)	8,461	(19,103)	(27,300)	(19,769)
Less: cumulative preferred stock dividends	6,317	0	17,360	0
Net income (loss) attributable to common shareholders	2,144	(19,103)	(44,660)	(19,769)
Other comprehensive income, net of income tax	3,352	9,230	27,703	24,215
Comprehensive income (loss)	$ 11,813	$ (9,873)	$ 403	$ 4,446
Net income (loss) per common share (Note 13):
Basic	$ 0.03	$ (0.25)	$ (0.57)	$ (0.29)
Diluted	$ 0.03	$ (0.25)	$ (0.57)	$ (0.29)
Product [Member]
Revenues:
Revenue from Contract with Customer, Excluding Assessed Tax	$ 487,693	$ 423,531	$ 1,421,751	$ 1,164,898
Service [Member]
Revenues:
Revenue from Contract with Customer, Excluding Assessed Tax	127,840	105,287	408,699	261,967
Other revenue [Member]
Revenues:
Revenue from Contract with Customer, Excluding Assessed Tax	$ 14,526	$ 14,458	$ 48,432	$ 45,600