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v3.3.1.900

Shareholders' Equity (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Class of Stock [Line Items] |  |  |
Preferred Stock, Shares Authorized | 500,000 | 500,000 |
Preferred Stock, Shares Issued | 0 | 0 | 0
Preferred Stock, Par or Stated Value Per Share | $ 25 | $ 25 |
Preferred Stock, Value, Outstanding | $ 0 | $ 0 | $ 0
Shares Paid for Tax Withholding for Share Based Compensation | 120,455 | 231,142 |
Computershare Trust Company, N.A [Member] |  |  |
Class of Stock [Line Items] |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 1 |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | 0.0001 |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 7.20 |  |
Minimum Percentage Of Ownership for Rights to become Exercisable | 10.00% |  |
Rights Per Common Share | 1 |  |
Redemption Price Per Right | $ 0.001 |  |
Series A Junior Participating Preferred Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Shares Authorized | 15,000 |  |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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