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Condensed Consolidated Statements of Equity/Capital (Unaudited) (Parenthetical) - shares | 6 Months Ended
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Jun. 30, 2015 | Jun. 30, 2014
Statement of Stockholders' Equity [Abstract] |  |
Issuances of common and restricted stock, shares | 272,498 | 241,188
Cancellation of restricted common stock, shares | 40,238 | 28,563

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