BUSINESS COMBINATIONS (Tables)

12 Months Ended

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