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Shareholders' Equity - Restricted Stock (Details) - USD ($) | 6 Months Ended
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Jun. 30, 2016 | Jun. 30, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross | 107,719 | 127,606
Stock Issued During Period, Value, Restricted Stock Award, Gross | $ 651,700 | $ 4,029,500
weighted average estimated fair value of restricted stock | $ 6.05 | $ 31.58

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- Definition Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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