Share-Based Compensation - Summary of Information about Restricted Stock Grants (Detail) $ in Millions	12 Months Ended
Dec. 31, 2015 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation	$ 4.2
November 2013 \| Grant One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	470,997
Unrecognized Compensation	$ 0.6
Remaining Period (in months)	10 months
Number of vesting installments	3,000
October 2014 \| Grant Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	506,171
Unrecognized Compensation	$ 1.5
Remaining Period (in months)	22 months
Number of vesting installments	3,000
April 2015 \| Grant Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	27,174
Unrecognized Compensation	$ 0.1
Remaining Period (in months)	22 months
Number of vesting installments	3,000
July 2015 \| Grant Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	38,772
Unrecognized Compensation	$ 0.2
Remaining Period (in months)	34 months
October 2015 \| Grant Five
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	595,509
Unrecognized Compensation	$ 1.5
Remaining Period (in months)	34 months
Number of vesting installments	3,000
October 2015 \| Grant Six
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	138,888
Unrecognized Compensation	$ 0.3
Remaining Period (in months)	10 months

Share Based Compensation Arrangements by Share Based Payment Award, Number of Vesting Installments

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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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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