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Shares Issued Through Equity Offering Program (Details) (Equity Offering Program, USD $) | 0 Months Ended | 1 Months Ended | 9 Months Ended
--- | --- | --- | ---
Aug. 09, 2012 | Nov. 04, 2013 | Sep. 30, 2013
Equity Offering Program |  |  |
Shares issued through equity offering program |  |  |
Maximum aggregate sales price of shares to be sold under an Equity Offering Sales Agreement (in dollars) | $ 50,000,000 |  |
Number of shares sold |  | 10,203 | 307,727
Proceeds from sale of shares, net of commission and before offering costs |  | 219,000 | 8,037,000
Payment of commissions on sale of shares |  | 2,000 | 81,000
Payment of offering costs on sale of shares |  |  | $ 75,000

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- Definition Represents the net proceeds after commissions but before offering costs from new stocks issued during the period. + References No definition available. + Details
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- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: 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 4: 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=6959260&loc=d3e187085-122770 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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