Segment Reporting (Tables)

3 Months Ended

Apr. 30, 2013

Segment Reporting [Abstract]

Summarized operating results and certain financial position data of Company's reportable continuing business segments

Three Months Ended April 30, 2013	Power Industry Services		Telecom Infrastructure Services		Other			Consolidated
Net revenues	$	43,769,000	$	2,879,000	$	—		$	46,648,000
Cost of revenues		31,246,000		2,374,000		—			33,620,000
Gross profit		12,523,000		505,000		—			13,028,000
Selling, general and administrative expenses		1,815,000		316,000		1,312,000			3,443,000
Income (loss) from operations		10,708,000		189,000		(1,312,000	)		9,585,000
Gain on deconsolidation of VIE		1,120,000		—		—			1,120,000
Other income (expense), net		154,000		—		1,000			155,000
Income (loss) before income taxes	$	11,982,000	$	189,000	$	(1,311,000	)		10,860,000
Income tax expense									3,920,000
Income from continuing operations								$	6,940,000
Amortization of purchased intangibles	$	61,000	$	—	$	—		$	61,000
Depreciation	$	83,000	$	45,000	$	1,000		$	129,000
Property, plant and equipment additions	$	673,000	$	11,000	$	—		$	684,000
Goodwill	$	18,476,000	$	—	$	—		$	18,476,000
Total assets	$	174,819,000	$	3,503,000	$	47,264,000		$	225,586,000

Three Months Ended April 30, 2012	Power Industry Services			Telecom Infrastructure Services		Other			Consolidated
Net revenues	$	57,728,000		$	5,962,000	$	—		$	63,690,000
Cost of revenues		48,984,000			4,605,000		—			53,589,000
Gross profit		8,744,000			1,357,000		—			10,101,000
Selling, general and administrative expenses		1,558,000			440,000		1,030,000			3,028,000
Income (loss) from operations		7,186,000			917,000		(1,030,000	)		7,073,000
Other income (expense), net		(9,000	)		—		—			(9,000	)
Income (loss) before income taxes	$	7,177,000		$	917,000	$	(1,030,000	)		7,064,000
Income tax expense										2,517,000
Income from continuing operations									$	4,547,000
Amortization of purchased intangibles	$	61,000		$	—	$	—		$	61,000
Depreciation	$	58,000		$	58,000	$	1,000		$	117,000
Property, plant and equipment additions	$	1,026,000		$	138,000	$	—		$	1,164,000
Goodwill	$	18,476,000		$	—	$	—		$	18,476,000
Total assets	$	177,183,000		$	4,819,000	$	42,687,000		$	224,689,000