Business Acquisitions (Tables)

6 Months Ended

Oct. 31, 2013

Business Combinations [Abstract]

Schedule of Purchase Price Allocation to Net Assets Acquired

The purchase price allocated to net assets acquired and the residual amount allocated to goodwill during the six months ended October 31, 2013 and 2012 are as follows:

	Six Months Ended October 31,
	2013			2012
Equipment	$	495		$	2,349
Goodwill		2,272			1,016
Intangible assets		1,865			1,486
Current liabilities		(38	)		(90	)
Total	$	4,594		$	4,761

Schedule of Unaudited Proforma Combined Financial Information

The following unaudited pro forma combined financial information shows the results of our operations for the three and six months ended October 31, 2013 and 2012 as though each of the acquisitions made in the six months ended October 31, 2013 and the twelve months ended April 30, 2013 had occurred as of May 1, 2012.

	Three Months Ended October 31,						Six Months Ended October 31,
	2013			2012			2013			2012
Revenue	$	132,857		$	124,091		$	263,134		$	249,062
Operating income	$	9,508		$	4,897		$	19,421		$	11,177
Net loss attributable to common stockholders	$	(312	)	$	(21,016	)	$	(426	)	$	(29,442	)
Basic and diluted loss per common share attributable to common stockholders	$	(0.01	)	$	(0.68	)	$	(0.01	)	$	(1.02	)
Basic and diluted weighted average shares outstanding		39,821			30,872			39,742			28,932