CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net income	$ 16,806	$ 13,779	$ 2,639
Adjustments to reconcile net income to net cash provided byoperating activities:
Gain on sale of discontinued operations, net of tax	0	(3,857)	0
Gain on sale of product line	(810)	(1,619)	(2,542)
Depreciation and amortization	13,572	14,478	14,407
Amortization of debt issuance costs	110	525	403
Deferred income taxes	(1,649)	1,182	334
Stock based compensation	1,401	1,288	1,354
Impairment and loss on disposition of property, plant and equipment	1,977	198	175
Changes in operating assets and liabilities:
Accounts receivable	(150)	(4,088)	(9,148)
Taxes receivable	(355)	112	2,517
Inventories	2,728	(348)	(11,820)
Prepaid expenses and other assets	620	(843)	552
Accounts payable	1,118	(3,892)	8,508
Accrued taxes	(693)	(667)	2,441
Accrued payroll and other compensation	1,152	573	3,472
Other liabilities, net	(1,422)	(2,164)	(2,574)
Net cash provided by operating activities	34,405	14,657	10,718
Cash flows from investing activities:
Net proceeds from divestiture	0	13,982	0
Acquisitions, net	0	0	276
Proceeds from sale of a product line	1,000	0	4,797
Capital expenditures	(11,404)	(8,884)	(12,001)
Reimbursement of cash from leasing company	0	818	699
Increase in restricted cash	0	(225)	0
Redemption (purchase) of short-term investment	12,015	(12,000)	0
Net cash provided by (used for) investing activities	1,611	(6,309)	(6,229)
Cash flows from financing activities:
Debt proceeds	0	0	4,900
Debt payments	(285)	(255)	(5,129)
Capital lease payments	(771)	(1,294)	(1,177)
Common stock repurchased	(3,998)	(200)	(111)
Excess tax benefit on stock awards	211	0	0
Common stock issued	972	128	113
Net cash used for financing activities	(3,871)	(1,621)	(1,404)
Effect of exchange rate changes on cash	573	(810)	(818)
Increase in cash and cash equivalents	32,718	5,917	2,267
Cash and cash equivalents at beginning of period	30,905	24,988	22,721
Cash and cash equivalents at end of period	63,623	30,905	24,988
Cash paid (received) during the year for:
Interest	255	351	441
Income taxes	$ 5,347	$ 6,308	$ (3,012)