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Debt - Schedule of Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Current portion of long-term debt	$ 461	$ 15,721
Long-term debt, net of current portion	9,729	18,338
JGB Debt [Member]
Debt Instrument [Line Items]
Current portion of long-term debt		7,743
Long-term debt, net of current portion		14,168
Danske Bank Credit Facility [Member]
Debt Instrument [Line Items]
Current portion of long-term debt	461	6,763
Danske Bank Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, net of current portion	5,622
SSP Primers Loan [Member]
Debt Instrument [Line Items]
Current portion of long-term debt	0	1,215
FastPartner Subordinated Promissory Notes [Member]
Debt Instrument [Line Items]
Long-term debt, net of current portion	2,363	2,400
Al Amoudi Subordinated Promissory Notes [Member]
Debt Instrument [Line Items]
Long-term debt, net of current portion	$ 1,744	$ 1,770

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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