Categories of Financial Assets and Financial Liabilities - Trade Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Gross value	$ 408,842	$ 267,845
Allowance	(11,598)	(6,264)
Not Yet Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Gross value	265,600	193,603
Allowance	0	0
Accounts Receivable, 1 to 30 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Gross value	92,163	53,803
Allowance	(49)	0
Accounts Receivable, 31 to 60 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Gross value	19,747	8,287
Allowance	(182)	0
Accounts Receivable, 61 to 90 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Gross value	6,055	2,574
Allowance	(191)	(2)
Accounts Receivable, Greater than 90 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Gross value	25,277	9,578
Allowance	$ (11,176)	$ (6,262)
Accounts Receivable
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	100.00%	100.00%
Accounts Receivable \| Not Yet Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	65.00%	72.20%
Accounts Receivable \| Accounts Receivable, 1 to 30 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	22.50%	20.10%
Accounts Receivable \| Accounts Receivable, 31 to 60 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	4.80%	3.10%
Accounts Receivable \| Accounts Receivable, 61 to 90 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	1.50%	1.00%
Accounts Receivable \| Accounts Receivable, Greater than 90 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	6.20%	3.60%
Allowance for Doubtful Accounts
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	100.00%	100.00%
Allowance for Doubtful Accounts \| Not Yet Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	0.00%	0.00%
Allowance for Doubtful Accounts \| Accounts Receivable, 1 to 30 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	0.40%	0.00%
Allowance for Doubtful Accounts \| Accounts Receivable, 31 to 60 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	1.60%	0.00%
Allowance for Doubtful Accounts \| Accounts Receivable, 61 to 90 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	1.60%	0.00%
Allowance for Doubtful Accounts \| Accounts Receivable, Greater than 90 Days Past Due
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Concentration risk, percentage	96.40%	100.00%

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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