Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities
Net income	$ 36,094	$ 28,903	$ 32,687
Adjustments to reconcile net income to cash provided by operating activities:
Provision for doubtful accounts	31	253	992
Depreciation	8,898	9,948	10,418
Amortization of debt issuance	126	126	188
Gain on bargain purchase	0	0	(8,616)
Goodwill impairment	0	656	1,898
Stock-based compensation	1,501	940	985
Excess tax benefits from stock-based payment arrangements	0	102	(63)
Provision for deferred income tax expense (benefit)	(877)	(405)	850
Gain (Loss) on sale of equipment	(237)	155	(263)
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable	(10,515)	4,770	(15,152)
Inventories	776	6,932	(8,680)
Prepaid expenses and other	(925)	(2,376)	(72)
Trade accounts payable and accrued liabilities	4,420	960	(4,162)
Income taxes payable	(4,565)	2,338	397
Other assets and liabilities, net	(3,100)	(2,039)	(740)
Net cash provided by operating activities	31,627	51,263	10,667
Investing Activities
Acquisitions, net of cash acquired	(1,002)	0	(6,536)
Purchase of property, plant and equipment	(13,639)	(4,654)	(5,766)
Proceeds from sale of property, plant and equipment	475	564	440
Net cash used in investing activities	(14,166)	(4,090)	(11,862)
Financing Activities
Net change in bank revolving credit facility	0	(7,000)	(14,000)
Principal payments on long-term debt and capital leases	(399)	(2,117)	(2,570)
Dividends paid	(3,371)	(2,854)	(2,845)
Proceeds from sale of common stock	1,286	2,131	281
Excess tax benefits from stock-based payment arrangements	0	(102)	63
Net cash provided by (used in) financing activities	(2,484)	(9,942)	(19,071)
Effect of exchange rate changes on cash	692	772	311
Net change in cash and cash equivalents	15,669	38,003	(19,955)
Cash and cash equivalents at beginning of the year	48,291	10,288	30,243
Cash and cash equivalents at end of the year	63,960	48,291	10,288
Cash paid during the year for:
Interest	1,118	1,837	2,295
Income taxes	$ 21,580	$ 13,533	$ 15,247