Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 46,802	$ 103,252
Accounts receivable (net of allowance of $2,579 and $2,582)	246,750	190,364
Inventories	55,155	42,104
Income taxes receivable	975	0
Deferred income taxes receivable	4,753	4,485
Prepaid expenses and other	2,621	1,892
Total current assets	357,056	342,097
Property, plant and equipment - at cost:
Land and land improvements	17,971	17,971
Construction-in-progress	8,758	15,564
Buildings and improvements	75,611	69,440
Machinery and equipment	179,993	174,916
Furniture and fixtures	7,440	7,066
Total property, plant and equipment	289,773	284,957
Accumulated depreciation	(155,579)	(149,972)
Property, plant and equipment - net	134,194	134,985
Other assets	222	194
Total assets	491,472	477,276
Current liabilities:
Trade accounts payable	30,070	32,897
Accrued liabilities	21,969	23,191
Income taxes payable	0	2,065
Total current liabilities	52,039	58,153
Non-current deferred income taxes	12,018	11,746
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value: Authorized shares - 2,000,000; none issued	0	0
Common stock, $.01 par value: Authorized shares - 40,000,000; Issued shares - 26,442,752 and; 26,366,752	264	264
Additional paid-in capital	45,893	45,040
Treasury stock, at cost - 3,150,277 and 3,150,277 shares	(21,294)	(21,294)
Retained earnings	402,552	383,367
Total stockholders' equity	427,415	407,377
Total liabilities and stockholders' equity	$ 491,472	$ 477,276