Business Segments (Tables)

9 Months Ended

Jun. 30, 2012

Business Segments [Abstract]

Detailed information regarding business segments

	Three Months Ended June 30,					Nine Months Ended June 30,
	2012			2011		2012		2011
Revenues:
Electrical Power Products	$	186,272		$	134,425	$	510,910	$	370,143
Process Control Systems		7,821			6,944		22,125		21,010
Total	$	194,093		$	141,369	$	533,035	$	391,153
Gross profit:
Electrical Power Products	$	41,677		$	19,788	$	93,203	$	67,236
Process Control Systems		2,166			2,076		5,255		5,369
Total	$	43,843		$	21,864	$	98,458	$	72,605
Income before income taxes:
Electrical Power Products	$	18,422		$	1,055	$	30,066	$	8,567
Process Control Systems		(143	)		140		54		(390	)
Total	$	18,279		$	1,195	$	30,120	$	8,177
Depreciation and amortization expense:
Electrical Power Products	$	3,365		$	3,951	$	9,779	$	11,325
Process Control Systems		22			39		35		123
Total	$	3,387		$	3,990	$	9,814	$	11,448