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Equity (Narrative) (Details) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 29, 2018 USD ($) $ / shares shares | May 25, 2018 USD ($) $ / shares shares | Sep. 01, 2017 USD ($) $ / shares shares | Sep. 30, 2018 USD ($) $ / shares shares | Sep. 30, 2017 USD ($) shares | Sep. 30, 2018 USD ($) $ / shares shares | Sep. 30, 2017 USD ($) shares | Mar. 31, 2018 USD ($) | Dec. 31, 2017 $ / shares shares
Permanent Equity [Line Items] |  |  |  |  |  |  |  |  |
Reverse stock split |  |  | 10 |  |  |  |  |  |
Common Stock, par value | $ / shares |  |  | $ 0.01 | $ 0.01 |  | $ 0.01 |  |  | $ 0.01
Common Stock, pre split par value | $ / shares |  |  | $ 0.001 |  |  |  |  |  |
Fractional shares issued | shares |  |  | 0 |  |  |  |  |  |
Cash payment in lieu of shares |  |  | $ 4 |  |  |  |  |  |
Common Stock, shares outstanding | shares |  |  | 1,262,584 | 1,221,520 |  | 1,221,520 |  |  | 1,213,022
Unvested restricted stock issued | shares |  |  | 81,098 |  |  |  |  |  |
Ratio of Common Stock to membership units |  |  |  |  |  | 0.1 |  |  |
Purchase of common stock, shares | shares | 17,555 | 2,774 |  |  |  |  | 5,720 |  |
Shares repurchased, price per share | $ / shares | $ 10 | $ 12 |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Par Value Method | $ 176 | $ 33 |  |  |  |  |  |  |
Series E Preferred Stock [Member] |  |  |  |  |  |  |  |  |
Permanent Equity [Line Items] |  |  |  |  |  |  |  |  |
Preferred Stock, shares outstanding | shares |  |  |  | 4,983,557 |  | 4,983,557 |  |  | 4,983,557
Ratio of shares to vote for vice chairman |  |  |  |  |  | 10 |  |  |
10b5-1 Plan [Member] |  |  |  |  |  |  |  |  |
Permanent Equity [Line Items] |  |  |  |  |  |  |  |  |
Repurchase amount authorized |  |  |  |  |  |  |  | $ 2,000 |
Purchase of common stock, shares | shares |  |  |  | 10,390 | 5,440 | 40,202 | 5,720 |  |
Treasury Stock, Value, Acquired, Par Value Method |  |  |  | $ 105 | $ 63 | $ 425 | $ 66 |  |
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |  |  |  |
Permanent Equity [Line Items] |  |  |  |  |  |  |  |  |
Redemption of non-controlling interest, net |  |  |  |  |  | 14 | (14) |  |
Additional paid-in capital [Member] |  |  |  |  |  |  |  |  |
Permanent Equity [Line Items] |  |  |  |  |  |  |  |  |
Redemption of non-controlling interest, net |  |  |  |  |  | (139) | 153 |  |
Non-controlling Interest [Member] |  |  |  |  |  |  |  |  |
Permanent Equity [Line Items] |  |  |  |  |  |  |  |  |
Redemption of non-controlling interest, net |  |  |  |  |  | $ 125 | $ (139) |  |

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