Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jun. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill for fiscal year 2014 by operating segment are as follows:

	Gross									Gross
	Balance,		Accumulated			Balance,				Balance,		Accumulated			Balance,
	July 1,		Impairment			July 1,				June 30,		Impairment			June 30,
Operating Segment	2013		Losses			2013		Additions		2014		Losses			2014
Energy	$	24,954	$	(14,506	)	$	10,448	$	2,882	$	27,836	$	(14,506	)	$	13,330
Environmental	36,214		(17,865		)	18,349		—		36,214		(17,865		)	18,349
Infrastructure	7,224		(7,224		)	—		—		7,224		(7,224		)	—
	$	68,392	$	(39,595	)	$	28,797	$	2,882	$	71,274	$	(39,595	)	$	31,679

The changes in the carrying amount of goodwill for fiscal year 2013 by operating segment are as follows:

	Gross									Gross
	Balance,		Accumulated			Balance,				Balance,		Accumulated			Balance,
	July 1,		Impairment			July 1,				June 30,		Impairment			June 30,
Operating Segment	2012		Losses			2012		Additions		2013		Losses			2013
Energy	$	21,893	$	(14,506	)	$	7,387	$	3,061	$	24,954	$	(14,506	)	$	10,448
Environmental	35,366		(17,865		)	17,501		848		36,214		(17,865		)	18,349
Infrastructure	7,224		(7,224		)	—		—		7,224		(7,224		)	—
	$	64,483	$	(39,595	)	$	24,888	$	3,909	$	68,392	$	(39,595	)	$	28,797

Schedule of Finite and Indefinite-Lived Intangible Assets

Identifiable intangible assets as of June 30, 2014 and 2013 are included in other assets on the consolidated balance sheets and were comprised of:

	June 30, 2014							June 30, 2013
	Gross					Net		Gross					Net
	Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
Identifiable intangible assets	Amount		Amortization			Amount		Amount		Amortization			Amount
With determinable lives:
Customer relationships	$	12,125	$	(4,400	)	$	7,725	$	9,349	$	(1,711	)	$	7,638
Contract backlog	110		(83		)	27		259		(194		)	65
	12,235		(4,483		)	7,752		9,608		(1,905		)	7,703
With indefinite lives:
Engineering licenses	426		—			426		426		—			426
	$	12,661	$	(4,483	)	$	8,178	$	10,034	$	(1,905	)	$	8,129

Schedule of Expected Amortization Expense [Table Text Block]

Estimated amortization expense of intangible assets for future periods is as follows:

Fiscal Year		Amount
2015		$	2,483
2016		1,998
2017		1,564
2018		1,112
2019		476
2020 and thereafter		119
	Total	$	7,752