Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Activities
Net income	$ 28,903	$ 32,687	$ 21,117
Adjustments to reconcile net income to cash provided by operating activities:
Provision for doubtful accounts	253	992	1,112
Depreciation	9,948	10,418	10,558
Amortization of intangibles	0	0	342
Amortization of debt issuance	126	188	375
Gain on bargain purchase	0	(8,616)	0
Goodwill impairment	656	1,898	0
Stock-based compensation	940	985	674
Excess tax benefits from stock-based payment arrangements	102	(63)	0
Provision for deferred income tax expense (benefit)	(405)	850	(6,384)
Gain (Loss) on sale of equipment	155	(263)	(833)
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable	4,770	(15,152)	(16,615)
Inventories	6,932	(8,680)	24,603
Prepaid expenses and other	(2,376)	(72)	(1,061)
Trade accounts payable and accrued liabilities	960	(4,162)	9,133
Income taxes payable	2,338	397	(268)
Other assets and liabilities, net	(2,039)	(740)	(876)
Net cash provided by operating activities	51,263	10,667	41,877
Investing Activities
Acquisitions, net of cash acquired	0	(6,536)	0
Purchase of property, plant and equipment	(4,654)	(5,766)	(4,980)
Proceeds from sale of property, plant and equipment	564	440	2,014
Net cash used in investing activities	(4,090)	(11,862)	(2,966)
Financing Activities
Net change in bank revolving credit facility	(7,000)	(14,000)	(20,000)
Principal payments on long-term debt and capital leases	(2,117)	(2,570)	(4,545)
Proceeds from issuance of long-term debt	0	0	368
Dividends paid	(2,854)	(2,845)	(2,826)
Proceeds from sale of common stock	2,131	281	990
Excess tax benefits from stock-based payment arrangements	(102)	63	0
Net cash provided by (used in) financing activities	(9,942)	(19,071)	(26,013)
Effect of exchange rate changes on cash	772	311	(429)
Net change in cash and cash equivalents	38,003	(19,955)	12,469
Cash and cash equivalents at beginning of the year	10,288	30,243	17,774
Cash and cash equivalents at end of the year	48,291	10,288	30,243
Cash paid during the year for:
Interest	1,837	2,295	3,597
Income taxes	$ 13,533	$ 15,247	$ 12,999