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Claims revenue (Tables) | 12 Months Ended
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Dec. 31, 2016
Contractors [Abstract] |
Schedule of claims revenue |
Year ended December 31, |  | 2016 |  |  | 2015 |
Claims revenue recognized |  | $ | 1,171 |  |  | $ | 7,547 |
The table below represents the classification of uncollected claims on the balance sheet:
|  | December 31, 2016 |  |  | December 31, 2015 |
Accounts receivable |  | $ | 1,171 |  |  | $ | — |
Unbilled revenue |  | 7,088 |  |  | 7,547 |
|  | $ | 8,259 |  |  | $ | 7,547 |

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- Definition Schedule of Contract Claims Revenue [Table Text Block] + References No definition available. + Details
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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