Income Taxes: Income tax (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

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

Income from continuing operations before taxes for the years ended December 31, 2012, 2011 and 2010 is as follows: 

	2012			2011		2010
United States	$	62,204		$	63,575	$	46,669
Foreign	(365		)	2,847		1,116
	$	61,839		$	66,422	$	47,785

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

The provision (benefit) for income taxes for the years ended December 31, 2012, 2011 and 2010 is as follows:

	2012			2011			2010
Current:
Federal	$	21,072		$	19,246		$	15,331
State	2,080			1,246			1,200
Foreign	678			785			1,109
	23,830			21,277			17,640
Deferred:
Federal	$	(2,276	)	$	169		$	(781	)
State	(796		)	326			439
Foreign	(200		)	(19		)	564
	(3,272		)	476			222
	$	20,558		$	21,753		$	17,862

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

Reconciliations of the provision for income taxes at the statutory rate to our effective tax rate for the years ended December 31, 2012, 2011 and 2010 are as follows:

	2012					2011					2010
	Amount			Percent		Amount			Percent		Amount			Percent
Federal tax at the expected statutory rate	$	21,644		35.0	%	$	23,247		35.0	%	$	16,724		35.0	%
State income tax, net of federal effect	1,356			2.2	%	1,460			2.2	%	1,007			2.1	%
Tax credits	(1,465		)	(2.4	)%	(1,171		)	(1.8	)%	(121		)	(0.3	)%
Tax-exempt interest and dividends	(23		)	(0.1	)%	(45		)	(0.1	)%	(33		)	(0.1	)%
Domestic production activities/other	(1,559		)	(2.5	)%	(1,508		)	(2.3	)%	(997		)	(2.0	)%
Foreign income tax	605			1.0	%	(230		)	(0.3	)%	1,282			2.7	%
	$	20,558		33.2	%	$	21,753		32.7	%	$	17,862		37.4	%

Deferred tax provision table text block [Table Text Block]

The components of our deferred income tax provision for the years ended December 31, 2012, 2011 and 2010 are as follows: 

	2012			2011			2010
Allowance for doubtful accounts	$	(59	)	$	(24	)	$	(66	)
Inventory reserves	143			1,147			(1,137		)
Accruals	(2,375		)	(464		)	(1,792		)
State income taxes	177			(7		)	(290		)
Acquired future tax deductions	50			293			300
Depreciation and amortization	(700		)	(205		)	2,820
Tax credits	(508		)	(264		)	387
	$	(3,272	)	$	476		$	222

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

	2012			2011
Current deferred tax assets:
State income taxes	$	437		$	343
Foreign	400			429
Accruals/other	1,881			1,377
Tax credits	441			452
Allowance for doubtful accounts	101			102
Inventory reserves	1,247			1,378
Current deferred tax asset before valuation allowance	$	4,507		$	4,081
Valuation allowance	(214		)	—
	4,293			4,081
Non-current deferred tax asset:
Foreign	$	983		$	526
Accruals/other	536			347
Depreciation and amortization	(458		)	(523		)
Tax credits state	4,927			4,409
Non-current deferred tax asset before valuation allowance	$	5,988		$	4,759
Valuation allowance	$	(346	)	$	—
	$	5,642		$	4,759
Non-current deferred tax liability:
State income taxes	$	(1,751	)	$	(1,481	)
Foreign	(2,301		)	(2,633		)
Accruals/other	(186		)	(186		)
Depreciation and amortization	(6,429		)	(6,862		)
Acquired future tax deductions	(515		)	(460		)
Stock-based compensation	5,581			3,843
Foreign currency translation adjustments	354			635
	$	(5,247	)	$	(7,144	)

Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table Text Block]

.

The following table summarizes our cumulative gross unrecognized tax benefits for 2012, 2011 and 2010 : 

	2012			2011			2010
Beginning balance	$	4,978		$	4,411		$	5,306
Increases (decreases) to prior year tax positions	156			494			(649		)
Increases to current year tax positions	490			764			518
Decrease related to settlements	(230		)	(392		)	(764		)
Decrease related to lapse of statute of limitations	(1,158		)	(299		)	—
Ending balance	$	4,236		$	4,978		$	4,411