Note F - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

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

	2013			2012			2011
Current Expense:
Federal	$	12,159		$	11,542		$	10,037
Foreign		792			(324	)		1,576
State and Local		981			1,021			761
		13,932			12,239			12,374
Deferred expense (benefit):
Federal		108			2,109			1,429
Foreign		(38	)		(189	)		(101	)
State and Local		171			85			179
		241			2,005			1,507
Income tax expense	$	14,173		$	14,244		$	13,881

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

	2013			2012			2011
Income taxes at statutory rate	$	15,497		$	14,856		$	14,940
State and local income taxes, net of federal tax benefit		587			719			611
Research and development tax credits		(740	)		--			(375	)
Domestic production activities		(952	)		(980	)		(811	)
Lower foreign taxes differential		(612	)		(528	)		(577	)
Uncertain tax positions		94			(236	)		49
Valuation Allowance		162			--			--
Other		137			413			44
Income tax expense	$	14,173		$	14,244		$	13,881

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

	2013			2012			2011
Deferred tax assets:
Inventories	$	1,688		$	170		$	49
Accrued liabilities		2,341			2,430			2,506
Postretirement health benefits obligation		6,545			7,848			8,060
Pension		--			1,217			873
Other		101			452			1,634
Total deferred income tax assets		10,675			12,117			13,122
Valuation allowance		(162	)		--			--
Net deferred income tax assets		10,513			12,117			13,122
Deferred tax liabilities:
Depreciation and amortization		16,858			14,376			13,419
Pension		1,634			--			--
		18,492			14,376			13,419
Net deferred tax liabilities	$	(7,979	)	$	(2,259	)	$	(297	)

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

	2013			2012			2011
Balance at beginning of year	$	421		$	1,423		$	1,298
Additions based on tax positions related to the current year		189			68			132
(Reduction) additions for tax positions of prior years		--			(1	)		117
Reductions due to lapse of applicable statute of limitations		(46	)		(131	)		(124	)
Settlements		(48	)		(938	)		--
Balance at end of year	$	516		$	421		$	1,423