Segment Reporting (Tables)

9 Months Ended

Oct. 31, 2014

Segment Reporting [Abstract]

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

Presented below are summarized operating results and certain financial position data of the Company’s business segments for the three and nine months ended October 31, 2014 and 2013. The “Other” columns include the Company’s corporate and unallocated expenses.

Three Months Ended October 31, 2014	Power Industry Services		Telecom Infrastructure Services		Other			Consolidated
Revenues	$	125,660,000	$	1,904,000	$	—		$	127,564,000
Cost of revenues		95,863,000		1,388,000		—			97,251,000
Gross profit		29,797,000		516,000		—			30,313,000
Selling, general and administrative expenses		3,486,000		311,000		1,676,000			5,473,000
Income (loss) from operations		26,311,000		205,000		(1,676,000	)		24,840,000
Other income, net		98,000		—		1,000			99,000
Income (loss) before income taxes	$	26,409,000	$	205,000	$	(1,675,000	)		24,939,000
Income tax expense									8,180,000
Net income								$	16,759,000
Amortization of purchased intangibles	$	61,000	$	—	$	—		$	61,000
Depreciation	$	94,000	$	43,000	$	3,000		$	140,000
Property, plant and equipment additions	$	1,629,000	$	14,000	$	—		$	1,643,000
Goodwill	$	18,476,000	$	—	$	—		$	18,476,000
Total assets	$	350,289,000	$	2,833,000	$	61,256,000		$	414,378,000

Three Months Ended October 31, 2013	Power Industry Services		Telecom Infrastructure Services		Other			Consolidated
Revenues	$	61,103,000	$	2,349,000	$	—		$	63,452,000
Cost of revenues		38,012,000		1,564,000		—			39,576,000
Gross profit		23,091,000		785,000		—			23,876,000
Selling, general and administrative expenses		1,814,000		344,000		1,387,000			3,545,000
Income (loss) from operations		21,277,000		441,000		(1,387,000	)		20,331,000
Other income, net		260,000		—		1,000			261,000
Income (loss) before income taxes	$	21,537,000	$	441,000	$	(1,386,000	)		20,592,000
Income tax expense									8,143,000
Net income								$	12,449,000
Amortization of purchased intangibles	$	61,000	$	—	$	—		$	61,000
Depreciation	$	96,000	$	45,000	$	1,000		$	142,000
Property, plant and equipment additions	$	69,000	$	15,000	$	—		$	84,000
Goodwill	$	18,476,000	$	—	$	—		$	18,476,000
Total assets	$	216,492,000	$	2,381,000	$	41,575,000		$	260,448,000

Nine Months Ended October 31, 2014	Power Industry Services		Telecom Infrastructure Services		Other			Consolidated
Revenues	$	275,902,000	$	4,883,000	$	—		$	280,785,000
Cost of revenues		215,174,000		3,684,000		—			218,858,000
Gross profit		60,728,000		1,199,000		—			61,927,000
Selling, general and administrative expenses		8,042,000		971,000		4,319,000			13,332,000
Income (loss) from operations		52,686,000		228,000		(4,319,000	)		48,595,000
Other income, net		160,000		—		2,000			162,000
Income (loss) before income taxes	$	52,846,000	$	228,000	$	(4,317,000	)		48,757,000
Income tax expense									15,177,000
Net income								$	33,580,000
Amortization of purchased intangibles	$	182,000	$	—	$	—		$	182,000
Depreciation	$	286,000	$	129,000	$	8,000		$	423,000
Property, plant and equipment additions	$	1,718,000	$	74,000	$	50,000		$	1,842,000

Nine Months Ended October 31, 2013	Power Industry Services		Telecom Infrastructure Services		Other			Consolidated
Revenues	$	160,392,000	$	7,572,000	$	—		$	167,964,000
Cost of revenues		104,062,000		5,741,000		—			109,803,000
Gross profit		56,330,000		1,831,000		—			58,161,000
Selling, general and administrative expenses		5,254,000		991,000		2,344,000			8,589,000
Income (loss) from operations		51,076,000		840,000		(2,344,000	)		49,572,000
Gains on the deconsolidation of VIEs		2,444,000		—		—			2,444,000
Other income, net		825,000		—		2,000			827,000
Income (loss) before income taxes	$	54,345,000	$	840,000	$	(2,342,000	)		52,843,000
Income tax expense									19,531,000
Net income								$	33,312,000
Amortization of purchased intangibles	$	182,000	$	—	$	—		$	182,000
Depreciation	$	268,000	$	137,000	$	2,000		$	407,000
Property, plant and equipment additions	$	880,000	$	62,000	$	—		$	942,000