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BUSINESS COMBINATIONS (Tables) | 12 Months Ended
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Dec. 31, 2017
Business Combinations [Abstract] |
Schedule of Purchase Price Paid for Acquisitions | The purchase price paid for these acquisitions and the allocation of the purchase price is as follows:
| Fiscal Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Purchase Price: |  |  |  |  |
Cash used in acquisitions, net of cash acquired | $ | 4,823 |  |  | $ | 2,439 |  |  | $ | — |
Notes payable | 2,400 |  |  | — |  |  | — |
Other non-cash considerations | 101 |  |  | — |  |  | — |
Contingent consideration and holdbacks | 736 |  |  | 400 |  |  | — |
Total | 8,060 |  |  | 2,839 |  |  | — |
Current assets | 93 |  |  | 40 |  |  | — |
Land | — |  |  | 353 |  |  | — |
Buildings | — |  |  | 1,360 |  |  | — |
Equipment | 2,994 |  |  | 269 |  |  | — |
Other liabilities, net | (49 | ) |  | (106 | ) |  | — |
Intangible assets | 2,334 |  |  | — |  |  | — |
Fair value of assets acquired and liabilities assumed | 5,372 |  |  | 1,916 |  |  | — |
Excess purchase price to be allocated to goodwill | $ | 2,688 |  |  | $ | 923 |  |  | $ | — |
Schedule of Unaudited Pro forma Combined Information | The following unaudited pro forma combined information shows our operational results as though each of the acquisitions completed had occurred as of January 1, 2015.
| Fiscal Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Revenue | $ | 602,754 |  |  | $ | 572,628 |  |  | $ | 556,569 |
Operating (loss) income | $ | (12,314 | ) |  | $ | 45,257 |  |  | $ | 31,940 |
Net loss attributable to common stockholders | $ | (21,647 | ) |  | $ | (6,685 | ) |  | $ | (12,947 | )
Basic and diluted net loss per common share attributable to common stockholders | $ | (0.52 | ) |  | $ | (0.16 | ) |  | $ | (0.32 | )
Basic and diluted weighted average shares outstanding | 41,846 |  |  | 41,233 |  |  | 40,642 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + 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=79982066&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=79982066&loc=d3e1392-128463 + Details
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