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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2018
Fair Value Disclosures [Abstract] |
Schedule of Derivative Liabilities at Fair Value [Table Text Block] | The table below presents the Company’s assets and liabilities measured at fair value on a recurring basis as of June 30, 2018 and December 31, 2017 (in thousands):
|  | Total Fair Value |  | Level 2 |
June 30, 2018 |  |  |  |  |  |  |
Derivative assets - interest rate swaps |  | $ | 4,062 |  | $ | 4,062 |
Derivative liabilities - interest rate swaps |  | $ | - |  | $ | - |
December 31, 2017 |  |  |  |  |  |  |
Derivative assets - interest rate swaps |  | $ | 1,592 |  | $ | 1,592 |
Derivative liabilities - interest rate swaps |  | $ | 242 |  | $ | 242 |

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- Definition Tabular disclosure of derivative liabilities at fair value. + References No definition available. + Details
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