Convertible and Long-term Debt Obligations - Term Loan - Additional Information (Detail) - March 2016, Agreement [Member] - Term Loan due in December 2018 [Member] - Non-recourse debt [Member]	Mar. 31, 2016
Debt Instrument [Line Items]
Line of credit, additional interest rate	3.25%
Percentage of fee for undrawn commitments	0.85%

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.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration