Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010
Operating Activities
Net income	$ 13,115		$ 16,112
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	8,174		7,330
Amortization of bond premiums	155
Provision for losses on accounts receivable, net of adjustments	(242)		(36)
Share-based compensation	509		609
Excess tax benefits from stock options exercised and restricted stock awards vested	(176)		(331)
Gain on disposition of assets	(14)		(105)
Deferred income taxes	(48)		(705)
Changes in assets and liabilities:
Accounts receivable	61		(3,522)
Inventories	(8,654)		(5,862)
Prepaid expenses and other	(194)		542
Financial derivative assets			1,743
Accounts payable	(2,281)		4,149
Accrued liabilities	870		3,748
Net cash provided by operating activities	11,275		23,672
Investing Activities
Proceeds from sale of property, plant and equipment	55		105
Investment in certificates of deposit			(2,744)
Maturities of certificates of deposit	1,503		799
Investments held to maturity			(13,692)
Maturities of investments	8,793		2,149
Capital expenditures	(30,638)		(13,050)
Deposits on sale of asset held for sale			453
Proceeds from note receivable	21
Net cash used in investing activities	(20,266)		(25,980)
Financing Activities
Borrowings under revolving credit facility	66,557		6,682
Payments under revolving credit facility	(52,592)		(2,691)
Payments of long-term debt			(68)
Stock options exercised	373		1,054
Excess tax benefits from stock options exercised and restricted stock awards vested	176		331
Repurchases of stock	(2,662)		(18,377)
Cash dividends paid to stockholders	(2,976)	[1]	(6,192)
Net cash provided by (used) in financing activities	8,876		(19,261)
Effect of exchange rate on cash			79
Net decrease in cash and cash equivalents	(115)		(21,490)
Cash and cash equivalents, beginning of year	2,393		25,639
Cash and cash equivalents, end of period	2,278		4,149
Non Cash Investing Activities
Capital expenditures accrued in accounts payable	$ 524

[1] Includes cash payment in lieu of fractional shares resulting from three-for-two stock split effective June 13, 2011.