Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net loss	$ (33,644)	$ (13,281)
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	28,201	29,723
Impairment of goodwill	35,944	7,146
Loss on sale of property, plant and equipment	167	0
Provision for doubtful accounts	2,662	1,640
Amortisation of debt issuance cost	1,454	1,414
Warrant contra revenue	1,622	1,295
Share-based compensation expense	832	1,516
Deferred income taxes	(276)	(1,101)
Share of loss of equity accounted investees	31	226
Changes in operating assets and liabilities
Trade accounts receivables, net	19,971	(4,492)
Prepaid and other assets	(11,376)	4,199
Trade accounts payables	(4,635)	(734)
Income taxes, net	2,668	(542)
Accrued expenses and other liabilities	22,432	962
Net cash generated from operating activities	66,053	27,971
Investing activities
Purchase of property, plant and equipment	(17,414)	(15,564)
Proceeds from equity accounted investees	395	1,308
Net cash used in investing activities	(17,019)	(14,256)
Financing activities
Proceeds from issuance of common stock	9,026	6,710
Payments on long term debt	(8,400)	(9,800)
Payments on line of credit, net	(24,529)	(6,623)
(Payments on) / proceeds from other borrowings, net	(7,304)	4,351
Net cash used in from financing activities	(31,207)	(5,362)
Net increase in cash and cash equivalents	17,827	8,353
Effect of exchange rate changes on cash and cash equivalents and restricted cash	106	(296)
Cash and cash equivalents and restricted cash at the beginning of period	32,626	24,569
Cash and cash equivalents and restricted cash at the end of period	50,559	32,626
Components of cash and cash equivalents and restricted cash
Balances with banks	44,507	20,464
Restricted cash	6,052	12,162
Total cash and cash equivalents and restricted cash	50,559	32,626
Supplemental disclosure of Cash Flow Information
Cash paid for interest and other finance cost	13,080	15,329
Cash paid for income taxes	4,795	6,379
Government grants/subsidy received	2,689	0
Non cash warrant contra revenue	1,622	1,295
Non cash share-based compensation expenses	$ 832	$ 1,516