Note F - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	2012		2011		2010
United States	$	40,019	$	37,329	$	34,593
Foreign countries		2,428		5,356		3,740
Income tax expense	$	42,447	$	42,685	$	38,333

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	2012			2011			2010
Current expense:
Federal	$	11,542		$	10,037		$	6,369
Foreign		(324	)		1,576			1,064
State and local		1,021			761			771
		12,239			12,374			8,204
Deferred expense (benefit):
Federal		2,109			1,429			4,138
Foreign		(189	)		(101	)		(42	)
State and local		85			179			70
		2,005			1,507			4,166
Income tax expense	$	14,244		$	13,881		$	12,370

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	2012			2011			2010
Income taxes at statutory rate	$	14,856		$	14,940		$	13,417
State and local income taxes, net of federal tax benefit		719			611			547
Research and development tax credits		-			(375	)		(350	)
Domestic production activities		(980	)		(811	)		(599	)
Lower foreign taxes differential		(528	)		(577	)		(439	)
Uncertain tax positions		(236	)		49			(234	)
Other		413			44			28
	$	14,244		$	13,881		$	12,370

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2012			2011			2010
Deferred tax assets:
Inventories	$	170		$	49		$	-
Accrued liabilities		2,430			2,506			2,237
Postretirement health benefits obligation		7,848			8,060			7,849
Pension		1,217			873			-
Other		452			1,634			1,834
		12,117			13,122			11,920
Deferred tax liabilities:
Inventories		-			-			391
Depreciation and amortization		14,376			13,419			11,524
Pension		-			-			2,001
		14,376			13,419			13,916
Net deferred tax liabilities	$	(2,259	)	$	(297	)	$	(1,996	)

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	2012			2011			2010
Balance at beginning of year	$	1,423		$	1,298		$	1,461
Additions based on tax positions related to the current year		68			132			106
(Reduction) additions for tax positions of prior years		(1	)		117			149
Reductions due to lapse of applicable statute of limitations		(131	)		(124	)		(157	)
Settlements		(938	)		-			(261	)
Balance at end of year	$	421		$	1,423		$	1,298