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Acquisitions (Tables) | 12 Months Ended
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Dec. 31, 2015
Business Combinations [Abstract] |
Schedule of Business Acquisitions, by Acquisition [Table Text Block] | The following table summarizes the allocation of the opening balance sheet from the date of acquisition through December 31, 2015:
(in thousands) |  | (as of acquisition date) April 13, 2015 |  | Measurement Period Adjustments |  | (adjusted acquisition amounts as of) December 31, 2015
Total consideration |  | $ | 11,374 |  |  | $ | — |  |  | $ | 11,374 |
Accounts receivable |  | $ | 10,662 |  |  | $ | — |  |  | $ | 10,662 |
Costs and estimated earnings in excess of billings on uncompleted contracts |  |  | 2,102 |  |  |  | — |  |  |  | 2,102 |
Other current assets |  |  | 59 |  |  |  | — |  |  |  | 59 |
Property and equipment |  |  | 1,778 |  |  |  | 253 |  |  |  | 2,031 |
Intangible assets |  |  | — |  |  |  | 2,068 |  |  |  | 2,068 |
Accounts payable |  |  | (3,621 | ) |  |  | — |  |  |  | (3,621 | )
Billings in excess of costs and estimated earnings on uncompleted contracts |  |  | (1,490 | ) |  |  | — |  |  |  | (1,490 | )
Other current liabilities |  |  | (437 | ) |  |  | — |  |  |  | (437 | )
Net identifiable assets |  |  | 9,053 |  |  |  | 2,321 |  |  |  | 11,374 |
Goodwill |  | $ | 2,321 |  |  | $ | (2,321 | ) |  | $ | — |
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] | The following table summarizes the estimated fair values of identifiable intangible assets (level 3 valuations) and the related weighted average amortization periods by type as of the respective acquisition dates for the 2015 acquisitions.
(in thousands) |  | Estimated Fair Value at Acquisition Date |  | Weighted Average Amortization Period at Acquisition Date
|  | (in thousands) |  | (in years)
Customer relationships |  | $ | 1,129 |  |  |  | 12.7 |
Backlog |  |  | 244 |  |  |  | 1.0 |
Trade names |  |  | 695 |  |  |  | 15.0 |
Total intangible assets |  | $ | 2,068 |  |  |  |  |

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- Definition Tabular disclosure of finite-lived and indefinite-lived intangible assets acquired as part of a business combination. + References No definition available. + Details
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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1486-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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