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Shares Issued through Equity Offering Program (Details) | 9 Months Ended
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Sep. 30, 2018 USD ($) shares
Shares Issued through Equity Offering Program |
Number of shares sold (in shares) | shares | 126,300
Proceeds from sale of shares, net of commission and before offering costs | $ 3,245,000
Payment of commissions on sale of shares | 33,000
Payment of offering costs on sale of shares | $ 75,000

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