Summary Financial Information

3 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Mar. 31, 2012

Summary Financial Information [Abstract]

Schedule Of Condensed Financial Statement [Text Block]

For the Three months ended December 31, 2012						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Net sales	$	63,278	$	34,323	$	68,439	$	(12,815)	$	153,225
Cost of products sold		44,711		27,904		49,628		(12,815)		109,428
Gross profit		18,567		6,419		18,811		-		43,797
Selling, general and administrative expenses		9,732		4,866		14,517		-		29,115
Amortization of intangibles		26		-		467		-		493
		9,758		4,866		14,984		-		29,608
Income from operations		8,809		1,553		3,827		-		14,189
Interest and debt expense		3,863		(532)		82		-		3,413
Other (income) and expense, net		(991)		(180)		1,175		-		4
Income before income tax expense and equity in income of subsidiaries		5,937		2,265		2,570		-		10,772
Income tax expense (benefit)		250		(80)		1,023		-		1,193
Equity in income from continuing operations of subsidiaries		3,892		-		-		(3,892)		-
Net income	$	9,579	$	2,345	$	1,547	$	(3,892)	$	9,579

For the Three Months Ended December 31, 2012						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Net income	$	9,579	$	2,345	$	1,547	$	(3,892)	$	9,579
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments		-		-		2,604		-		2,604
Change in derivatives qualifying as hedges, net of deferred tax expense		(161)		-		23		-		(138)
Adjustments:
Unrealized holding gain arising during the period, net of deferred tax expense		-		-		194		-		194
Reclassification adjustment for gain included in net income, net of deferred tax expense		-		-		(253)		-		(253)
Total adjustments		-		-		(59)		-		(59)
Total other comprehensive income		(161)		-		2,568		-		2,407
Comprehensive income	$	9,418	$	2,345	$	4,115	$	(3,892)	$	11,986

For the Three months ended December 31, 2011						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Net sales	$	55,631	$	34,900	$	65,124	$	(12,905)	$	142,750
Cost of products sold		40,354		30,007		46,691		(12,905)		104,147
Gross profit		15,277		4,893		18,433		-		38,603
Selling, general and administrative expenses		9,357		5,004		13,224		-		27,585
Amortization of intangibles		28		-		457		-		485
		7,918		5,004		13,681		-		26,603
Income from operations		7,359		(111)		4,752		-		12,000
Interest and debt expense		2,862		642		86		-		3,590
Other (income) and expense, net		(180)		15		(1,606)		-		(1,771)
Income before income tax expense and equity in income of subsidiaries		4,677		(768)		6,272		-		10,181
Income tax expense		(807)		-		2,473		-		1,666
Equity in income from continuing operations of subsidiaries		3,031		-		-		(3,031)		-
Net income	$	8,515	$	(768)	$	3,799	$	(3,031)	$	8,515

For the Three Months Ended December 31, 2011						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Net income	$	8,515	$	(768)	$	3,799	$	(3,031)	$	8,515
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments		-		-		(3,597)		-		(3,597)
Change in derivatives qualifying as hedges, net of deferred tax expense		(82)		-		46		-		(36)
Adjustments:
Unrealized holding loss arising during the period, net of deferred tax expense		-		-		610		-		610
Reclassification adjustment for gain included in net income, net of deferred tax expense		-		-		32		-		32
Total adjustments		-		-		642		-		642
Total other comprehensive income (loss)		(82)		-		(2,909)		-		(2,991)
Comprehensive income (loss)	$	8,433	$	(768)	$	890	$	(3,031)	$	5,524

						Non
As of December 31, 2012		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Current assets:
Cash and cash equivalents	$	67,255	$	-	$	44,682	$	-	$	111,937
Trade accounts receivable		37,475		3,803		37,432		-		78,710
Inventories		29,851		16,343		55,337		-		101,531
Other current assets		4,402		534		4,175		-		9,111
Total current assets		138,983		20,680		141,626		-		301,289
Property, plant, and equipment, net		34,199		11,791		14,775		-		60,765
Goodwill and other intangibles, net		40,960		31,025		48,357		-		120,342
Intercompany		(184)		63,175		(61,728)		(1,263)		-
Other assets		6,400		783		26,163		-		33,346
Investment in subsidiaries		203,753		-		-		(203,753)		-
Total assets	$	424,111	$	127,454	$	169,193	$	(205,016)	$	515,742
Current liabilities		34,755		11,374		38,155		(1,263)		83,021
Long-term debt, less current portion		148,345		1,731		1,150		-		151,226
Other non-current liabilities		51,551		6,782		33,702		-		92,035
Total liabilities		234,651		19,887		73,007		(1,263)		326,282
Shareholders' equity		189,460		107,567		96,186		(203,753)		189,460
Total liabilities and shareholders' equity	$	424,111	$	127,454	$	169,193	$	(205,016)	$	515,742

For the Nine Months Ended December 31, 2012						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Net sales	$	180,008	$	117,522	$	195,625	$	(40,445)	$	452,710
Cost of products sold		128,941		97,740		136,451		(40,445)		322,687
Gross profit		51,067		19,782		59,174		-		130,023
Selling, general and administrative expenses		30,061		15,997		42,594		-		88,652
Restructuring charges		-		-		-		-		-
Amortization of intangibles		73		-		1,408		-		1,481
		30,134		15,997		44,002		-		90,133
Income from operations		20,933		3,785		15,172		-		39,890
Interest and debt expense		9,961		152		305		-		10,418
Other (income) and expense, net		(1,161)		(164)		26		-		(1,299)
Income before income tax expense and equity in income of subsidiaries		12,133		3,797		14,841		-		30,771
Income tax (benefit) expense		17		-		4,487		-		4,504
Equity in income from continuing operations of subsidiaries		14,151		-		-		(14,151)		-
Net income	$	26,267	$	3,797	$	10,354	$	(14,151)	$	26,267

For the Nine Months Ended December 31, 2012						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Net income	$	26,267	$	3,797	$	10,354	$	(14,151)	$	26,267
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments		-		-		(40)		-		(40)
Change in derivatives qualifying as hedges, net of deferred tax expense		(118)		-		(208)		-		(326)
Adjustments:		-		-		-		-		-
Unrealized holding gain arising during the period, net of deferred tax expense		-		-		489		-		489
Reclassification adjustment for gain included in net income, net of deferred tax expense		-		-		(400)		-		(400)
Total adjustments		-	-	-	-	89	-	-	-	89
Total other comprehensive income (loss)		(118)	-	-	-	(159)	-	-	-	(277)
Comprehensive income	$	26,149	$	3,797	$	10,195	$	(14,151)	$	25,990

For the Nine Months Ended December 31, 2012						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Operating activities:
Net cash provided by (used for) operating activities	$	15,908	$	(1,715)	$	12,094	$	-	$	26,287
Investing activities:
Purchase of marketable securities, net		-		-		2,183		-		2,183
Capital expenditures		(4,683)		(445)		(2,011)		-		(7,139)
Proceeds from sale of assets		-		2,357		-		-		2,357
Net cash (used for) provided by investing activities		(4,683)		1,912		172		-		(2,599)
Financing activities:
Proceeds from stock options exercised		232		-		-		-		232
Net payments under lines-of-credit		-		-		(52)		-		(52)
Other		(160)		(202)		(596)		-		(958)
Net cash provided by (used for) financing activities		72		(202)		(648)		-		(778)
Effect of exchange rate changes on cash		-		-		(446)		-		(446)
Net change in cash and cash equivalents		11,297		(5)		11,172		-		22,464
Cash and cash equivalents at beginning of period		55,958		5		33,510		-		89,473
Cash and cash equivalents at end of period	$	67,255	$	-	$	44,682	$	-	$	111,937

For the Nine Months Ended December 31, 2011						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Net sales	$	159,172	-	121,760	-	191,495	-	(40,054)	$	432,373
Cost of products sold		118,157		105,425		135,369		(40,054)		318,897
Gross profit		41,015		16,335		56,126		-		113,476
Selling, general and administrative expenses		26,150		14,756		40,565		-		81,471
Restructuring charges		(1,455)		-		418		-		(1,037)
Amortization of intangibles		82		-		1,433		-		1,515
		24,777		14,756		42,416		-		81,949
Income from operations		16,238		1,579		13,710		-		31,527
Interest and debt expense		9,340		1,048		263		-		10,651
Other (income) and expense, net		(586)		33		(2,030)		-		(2,583)
Income from continuing operations before income tax expense and equity in income of subsidiaries		7,484		498		15,477		-		23,459
Income tax expense		557		169		5,172		-		5,898
Equity in income from continuing operations of subsidiaries		10,634		-		-		(10,634)		-
Income from continuing operations		17,561		329		10,305		(10,634)		17,561
Gain from discontinued operations		409		-		-		-		409
Net income	$	17,970	-	329	-	10,305	-	(10,634)	$	17,970

For the Nine Months Ended December 31, 2011						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Net sales	$	159,172	-	121,760	-	191,495	-	(40,054)	$	432,373
Cost of products sold		118,157		105,425		135,369		(40,054)		318,897
Gross profit		41,015		16,335		56,126		-		113,476
Selling, general and administrative expenses		26,150		14,756		40,565		-		81,471
Restructuring charges		(1,455)		-		418		-		(1,037)
Amortization of intangibles		82		-		1,433		-		1,515
		24,777		14,756		42,416		-		81,949
Income from operations		16,238		1,579		13,710		-		31,527
Interest and debt expense		9,340		1,048		263		-		10,651
Other (income) and expense, net		(586)		33		(2,030)		-		(2,583)
Income from continuing operations before income tax expense and equity in income of subsidiaries		7,484		498		15,477		-		23,459
Income tax expense		557		169		5,172		-		5,898
Equity in income from continuing operations of subsidiaries		10,634		-		-		(10,634)		-
Income from continuing operations		17,561		329		10,305		(10,634)		17,561
Gain from discontinued operations		409		-		-		-		409
Net income	$	17,970	-	329	-	10,305	-	(10,634)	$	17,970

For the Nine Months Ended December 31, 2011						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Net income	$	17,970	$	329	$	10,305	$	(10,634)	$	17,970
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments		-		-		(8,047)		-		(8,047)
Change in derivatives qualifying as hedges, net of deferred tax expense		(10)		-		46		-		36
Adjustments:
Unrealized holding loss arising during the period, net of deferred tax expense		-		-		198		-		198
Reclassification adjustment for gain included in net income, net of deferred tax expense		-		-		157		-		157
Total adjustments		-		-		355		-		355
Total other comprehensive income (loss)		(10)		-		(7,646)		-		(7,656)
Comprehensive income	$	17,960	$	329	$	2,659	$	(10,634)	$	10,314

For the Nine Months Ended December 31, 2011						Non
		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Operating activities:
Net cash provided by (used for) operating activities	$	8,044	$	2,942	$	2,477	$	-	$	13,463
Investing activities:
Purchase of marketable securities, net		-		-		1,244		-		1,244
Capital expenditures		(8,553)		(702)		(1,209)		-		(10,464)
Proceeds from sale of real estate, net		1,971		-		-		-		1,971
Purchase of business, net of cash acquired		-		-		(3,356)		-		(3,356)
Net cash provided by investing activities from discontinued operations		409		-		-		-		409
Net cash used for investing activities		(6,173)		(702)		(3,321)		-		(10,196)
Financing activities:
Proceeds from stock options exercised		1,733		-		-		-		1,733
Net payments under lines-of-credit		-		-		(238)		-		(238)
Other		324		(177)		(311)		-		(164)
Net cash provided by (used for) financing activities		2,057		(177)		(549)		-		1,331
Effect of exchange rate changes on cash		-		-		(2,704)		-		(2,704)
Net change in cash and cash equivalents		3,928		2,063		(4,097)		-		1,894
Cash and cash equivalents at beginning of period		45,954		7		34,178		-		80,139
Cash and cash equivalents at end of period	$	49,882	$	2,070	$	30,081	$	-	$	82,033

						Non
As of March 31, 2012		Parent		Guarantors		Guarantors		Eliminations		Consolidated
Current assets:
Cash and cash equivalents	$	55,958	$	5	$	33,510	$	-	$	89,473
Trade accounts receivable		44,375		5,579		38,688		-		88,642
Inventories		29,161		20,087		61,347		(2,540)		108,055
Prepaid expenses		5,398		502		4,004		545		10,449
Total current assets		134,892		26,173		137,549		(1,995)		296,619
Property, plant, and equipment, net		32,679		13,050		15,980		-		61,709
Goodwill and other intangibles, net		40,906		31,025		50,295		-		122,226
Intercompany		(41,502)		102,471		(61,149)		180		-
Other non-current assets		6,449		784		27,620		-		34,853
Investment in subsidiaries		228,138		-		-		(228,138)		-
Total assets	$	401,562	$	173,503	$	170,295	$	(229,953)	$	515,407
		-		-		-		-		-
Current liabilities	$	37,480	$	18,772	$	49,472	$	(1,815)	$	103,909
Long-term debt, less current portion		148,140		1,961		1,788		-		151,889
Other non-current liabilities		55,476		6,842		36,825		-		99,143
Total liabilities		241,096		27,575		88,085		(1,815)		354,941
Shareholders' equity		160,466		145,928		82,210		(228,138)		160,466
Total liabilities and shareholders' equity	$	401,562	$	173,503	$	170,295	$	(229,953)	$	515,407