Share-Based Compensation - Summary of Information about Restricted Stock Grants Outstanding (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Unrecognized Compensation	$ 3.5
Restricted Stock
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares	0	63,000
Restricted Stock \| October 2014
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares	506,171
Unrecognized Compensation	$ 0.4
Remaining Periods (in months)	7 months
Restricted Stock \| April 2015
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares	27,174
Unrecognized Compensation	$ 0.0
Remaining Periods (in months)	7 months
Restricted Stock \| October 2015
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares	595,509
Unrecognized Compensation	$ 0.9
Remaining Periods (in months)	19 months
Restricted Stock \| January/March 2016
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares	62,610
Unrecognized Compensation	$ 0.0
Remaining Periods (in months)	19 months
Restricted Stock \| October 2016
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares	410,751
Unrecognized Compensation	$ 1.9
Remaining Periods (in months)	31 months
Restricted Stock \| October 2016
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares	97,951
Unrecognized Compensation	$ 0.3
Remaining Periods (in months)	7 months

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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- 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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