Segment Reporting (Tables)

3 Months Ended

Apr. 30, 2015

Segment Reporting [Abstract]

Summarized Operating Results and Certain Financial Position Data of Company's Reportable Business Segments

Presented below are summarized operating results and certain financial position data of the Company’s reportable business segments for the three months ended April 30, 2015 and 2014. The “Other” columns include the Company’s corporate and unallocated expenses.

Three Months Ended April 30, 2015	Power Industry Services		Telecom Infrastructure Services		Other			Consolidated
Revenues	$	82,884,000	$	2,604,000	$	—		$	85,488,000
Cost of revenues		62,379,000		1,942,000		—			64,321,000
Gross profit		20,505,000		662,000		—			21,167,000
Selling, general and administrative expenses		3,583,000		304,000		1,653,000			5,540,000
Income (loss) from operations		16,922,000		358,000		(1,653,000	)		15,627,000
Other income, net		79,000		—		6,000			85,000
Income (loss) before income taxes	$	17,001,000	$	358,000	$	(1,647,000	)		15,712,000
Income tax expense									4,861,000
Net income								$	10,851,000
Amortization of purchased intangibles	$	60,000	$	—	$	—		$	60,000
Depreciation	$	75,000	$	41,000	$	3,000		$	119,000
Property, plant and equipment additions	$	1,126,000	$	81,000	$	—		$	1,207,000
Goodwill	$	18,476,000	$	—	$	—		$	18,476,000
Total assets	$	334,355,000	$	4,424,000	$	61,093,000		$	399,872,000

Three Months Ended April 30, 2014	Power Industry Services		Telecom Infrastructure Services			Other			Consolidated
Revenues	$	49,824,000	$	1,367,000		$	—		$	51,191,000
Cost of revenues		40,049,000		1,091,000			—			41,140,000
Gross profit		9,775,000		276,000			—			10,051,000
Selling, general and administrative expenses		1,787,000		352,000			1,240,000			3,379,000
Income (loss) from operations		7,988,000		(76,000	)		(1,240,000	)		6,672,000
Other income, net		21,000		—			1,000			22,000
Income (loss) before income taxes	$	8,009,000	$	(76,000	)	$	(1,239,000	)		6,694,000
Income tax expense										1,894,000
Net income									$	4,800,000
Amortization of purchased intangibles	$	60,000	$	—		$	—		$	60,000
Depreciation	$	96,000	$	44,000		$	2,000		$	142,000
Property, plant and equipment additions	$	28,000	$	7,000		$	50,000		$	85,000
Goodwill	$	18,476,000	$	—		$	—		$	18,476,000
Total assets	$	331,560,000	$	2,118,000		$	38,639,000		$	372,317,000