Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Cash Flows From Operating Activities
Net income	$ 11,377	$ 4,431
Items not affecting use of cash
Depreciation	16,064	15,019
Impairment charges	252	0
Amortization of intangible assets	1,474	1,485
Non-cash stock compensation	1,607	1,133
Provision for loss on accounts receivable	1,773	327
Other	50	0
Deferred taxes	(70)	(76)
Gain on sale of property, plant and equipment	0	(733)
Cash flow provided by (used for) working capital
Accounts receivable	(4,281)	(3,262)
Inventories	(9,247)	1,154
Prepaid expenses	903	798
Accounts payable and accrued expenses	(11,151)	(22,896)
Net cash provided by (used for) operating activities	8,751	(2,620)
Cash Flows From Investing Activities
Proceeds from sale of property, plant and equipment	0	5,165
Additions to property, plant and equipment	(5,765)	(9,320)
Other	848	73
Net cash used for investing activities	(4,917)	(4,082)
Cash Flows From Financing Activities
Net borrowing on credit facility	6,552	12,552
Cash dividends paid	(4,715)	(4,611)
Proceeds from issuance of common stock	70	72
Repurchase of common stock	(3,722)	0
Net cash (used for) provided by financing activities	(1,815)	8,013
Foreign Exchange Rate Effect on Cash	212	17
Net increase in cash	2,231	1,328
Cash at January 1	4,705	4,728
Cash at June 30	$ 6,936	$ 6,055

Name:	us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.