Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes

Schedule of components of provision for income tax expense (benefit)

	Year ended December 31
	2012			2011		2010
Current:
Federal	$	(3,994	)	$	2,697	$	—
State		289			326		231
		(3,705	)		3,023		231
Deferred:
Federal		7,375			7,855		363
State		474			454		278
		7,849			8,309		641
	$	4,144		$	11,332	$	872

Schedule of reconciliation of income tax expense computed at the federal statutory rate to the provision for income taxes

	2012			2011			2010
Federal income tax expense at statutory rate	$	3,555		$	10,630		$	862
State taxes, net of federal benefit		218			1,522			7
Valuation allowance changes		451			(47	)		311
Change in uncertain tax positions, net		8			(150	)		(349	)
Research and development credit		(26	)		(111	)		(117	)
Rate change		67			(162	)		95
Manufacturing tax benefits		—			(552	)		—
Other		(129	)		202			63
	$	4,144		$	11,332		$	872

Schedule of significant components of deferred tax liabilities and assets

	December 31,
	2012			2011
Deferred tax assets:
Allowance for doubtful accounts	$	223		$	465
Inventory reserves		445			479
Warranty liability		1,346			1,552
Deferred compensation		383			911
Pension and retiree health benefit obligations		7,072			8,615
Accrued vacation		631			570
Medical claims reserve		261			242
State net operating losses		2,633			2,167
Other accrued liabilities		746			1,583
Valuation allowance for state net operating losses		(1,374	)		(830	)
Total deferred tax assets		12,366			15,754
Deferred tax liabilities:
Tax deductible goodwill and other intangibles		(39,664	)		(34,923	)
Accelerated depreciation		(2,205	)		(2,280	)
Other		(592	)		(556	)
Total deferred tax liabilities		(42,461	)		(37,759	)
Net deferred tax liabilities	$	(30,095	)	$	(22,005	)

Schedule of reconciliation of the beginning and ending liability for uncertain tax positions

	2012		2011
Balance at beginning of year	$	320	$	798
Decreases due to settlements with taxing authorities		—		(478	)
Increases for tax position taken in prior years		8		—
Balance at the end of year	$	328	$	320