Condensed Consolidating Financial Statements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Mar. 31, 2011
Current assets:
Cash and cash equivalents	$ 187,846	$ 210,521	$ 133,998	$ 152,051
Accounts receivable, net	106,168	104,950
Inventories, net	216,303	212,234
Prepaid expenses and other	34,460	32,259
Deferred income taxes	6,958	6,370
Total current assets	551,735	566,334
Property and equipment, net	310,586	315,848
Goodwill	36,676	36,676
Intangible assets, net	40,402	41,527
Other assets	17,371	15,167
Total assets	956,770	975,552
Current liabilities:
Current portion of long-term debt	1,535	1,951
Accounts payable, trade	86,556	74,404
Accrued expenses	69,834	89,079
Income taxes payable	2,186	2,256
Total current liabilities	160,111	167,690
Long-term debt, less current portion	359,751	345,380
Other non-current obligations	96,890	101,229
Deferred income taxes	5,448	2,257
Stockholders' equity	334,570	358,996
Total liabilities and stockholders' equity	956,770	975,552
Parent
Current assets:
Cash and cash equivalents	8,432	7,933	6,531	6,417
Intercompany receivable	267,797	251,970
Prepaid expenses and other	276	306
Total current assets	276,505	260,209
Property and equipment, net	17	20
Investments in subsidiaries	444,952	454,517
Other assets	7,735	7,796
Long-term intercompany receivable	74,644	79,185
Total assets	803,853	801,727
Current liabilities:
Accounts payable, trade		460
Intercompany payable	54,732	34,830
Accrued expenses	22,222	30,747
Income taxes payable	(2,962)	(2,778)
Total current liabilities	73,992	63,259
Long-term debt, less current portion	359,211	343,539
Other non-current obligations	36,080	35,933
Stockholders' equity	334,570	358,996
Total liabilities and stockholders' equity	803,853	801,727
Guarantor Subsidiaries
Condensed Consolidating Balance Sheet
Percentage of ownership interest	100.00%
Interest rate of senior notes (as a percent)	10.50%
Current assets:
Cash and cash equivalents	158,239	178,205	92,070	119,326
Accounts receivable, net	43,194	42,706
Intercompany receivable	168,956	28,002
Inventories, net	127,285	121,611
Prepaid expenses and other	13,346	13,537
Deferred income taxes	1,889	192
Total current assets	512,909	384,253
Property and equipment, net	113,699	114,615
Investments in subsidiaries	440,424	435,970
Goodwill	36,676	36,676
Intangible assets, net	31,264	31,630
Other assets	6,173	6,160
Long-term intercompany receivable	58,666	62,235
Total assets	1,199,811	1,071,539
Current liabilities:
Current portion of long-term debt	25	25
Accounts payable, trade	42,882	35,206
Intercompany payable	433,125	315,906
Accrued expenses	14,090	23,007
Income taxes payable	3,050	3,031
Total current liabilities	493,172	377,175
Other non-current obligations	4,347	5,400
Deferred income taxes	1,997	272
Long-term intercompany payable	74,644	79,185
Stockholders' equity	625,651	609,507
Total liabilities and stockholders' equity	1,199,811	1,071,539
Non-Guarantor Subsidiaries
Condensed Consolidating Balance Sheet
Percentage of capital stock	0.51
Current assets:
Cash and cash equivalents	21,175	24,383	35,397	26,308
Accounts receivable, net	62,974	62,244
Intercompany receivable	194,111	171,921
Inventories, net	89,018	90,623
Prepaid expenses and other	20,838	18,416
Deferred income taxes	5,069	6,178
Total current assets	393,185	373,765
Property and equipment, net	196,870	201,213
Investments in subsidiaries	(5,324)	(4,622)
Intangible assets, net	9,138	9,897
Other assets	3,463	1,211
Long-term intercompany receivable	2,879	1,065
Total assets	600,211	582,529
Current liabilities:
Current portion of long-term debt	1,510	1,926
Accounts payable, trade	43,674	39,490
Intercompany payable	143,007	122,799
Accrued expenses	33,522	35,325
Income taxes payable	2,098	2,003
Total current liabilities	223,811	201,543
Long-term debt, less current portion	540	1,841
Other non-current obligations	56,463	59,896
Deferred income taxes	3,451	1,985
Long-term intercompany payable	61,545	63,300
Stockholders' equity	254,401	253,964
Total liabilities and stockholders' equity	600,211	582,529
Reclassifications and Eliminations
Current assets:
Intercompany receivable	(630,864)	(451,893)
Total current assets	(630,864)	(451,893)
Investments in subsidiaries	(880,052)	(885,865)
Long-term intercompany receivable	(136,189)	(142,485)
Total assets	(1,647,105)	(1,480,243)
Current liabilities:
Accounts payable, trade		(752)
Intercompany payable	(630,864)	(473,535)
Total current liabilities	(630,864)	(474,287)
Long-term intercompany payable	(136,189)	(142,485)
Stockholders' equity	(880,052)	(863,471)
Total liabilities and stockholders' equity	$ (1,647,105)	$ (1,480,243)