Operating leases term of lease agreement.

No definition available.

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- Definition

Percentage of cash and cash equivalents invested in highly rated money market funds.

+ References

No definition available.

+ Details

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- Definition

Summary of significant accounting policies and estimates.

+ References

No definition available.

+ Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Stock Split
-URI http://asc.fasb.org/extlink&oid=6525746

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- Definition

Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

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Summary of Significant Accounting Policies - Additional Information (Detail)		12 Months Ended
	Feb. 28, 2013	Dec. 31, 2015	Dec. 31, 2014
Summary Of Significant Accounting Policies And Estimates [Line Items]
Reverse stock split		One-for-four reverse stock split
Reverse stock split conversion ratio	0.25
Cash equivalents, invested in money market funds		77.00%	92.00%
Maximum [Member]
Summary Of Significant Accounting Policies And Estimates [Line Items]
Terms of lease agreements for corporate headquarters and other offices		10 years
Software [Member] \| Minimum [Member]
Summary Of Significant Accounting Policies And Estimates [Line Items]
Estimated useful life		3 years
Software [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies And Estimates [Line Items]
Estimated useful life		5 years
Furniture and Equipment [Member] \| Minimum [Member]
Summary Of Significant Accounting Policies And Estimates [Line Items]
Estimated useful life		3 years
Furniture and Equipment [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies And Estimates [Line Items]
Estimated useful life		5 years