Income Taxes: Income tax (Tables)

12 Months Ended

Dec. 31, 2011

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, 2011, 2010 and 2009 is as follows: 

	2011		2010		2009
United States	$	63,575	$	46,669	$	33,672
Foreign	2,847		1,116		2,935
	$	66,422	$	47,785	$	36,607

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

The provision (benefit) for income taxes for the years ended December 31, 2011, 2010 and 2009 is as follows:

	2011			2010			2009
Current:
Federal	$	19,246		$	15,331		$	9,533
State	1,246			1,200			692
Foreign	785			1,109			1,126
	21,277			17,640			11,351
Deferred:
Federal	$	169		$	(781	)	$	1,056
State	326			439			(1,002		)
Foreign	(19		)	564			221
	476			222			275
	$	21,753		$	17,862		$	11,626

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

Reconciliations of the provision for income taxes at the statutory rate to the Company’s effective tax rate for the years ended December 31, 2011, 2010 and 2009 are as follows:

	2011					2010					2009
	Amount			Percent		Amount			Percent		Amount			Percent
Federal tax at the expected statutory rate	$	23,247		35.0	%	$	16,724		35.0	%	$	12,812		35.0	%
State income tax, net of federal effect	1,460			2.2	%	1,007			2.1	%	818			2.2	%
Tax credits	(1,171		)	(1.8	)%	(121		)	(0.3	)%	(1,690		)	(4.6	)%
Tax-exempt interest and dividends	(45		)	(0.1	)%	(33		)	(0.1	)%	(283		)	(0.8	)%
Domestic production activities/other	(1,508		)	(2.3	)%	(997		)	(2.0	)%	(351		)	(0.9	)%
Foreign income tax	(230		)	(0.3	)%	1,282			2.7	%	320			0.9	%
	$	21,753		32.7	%	$	17,862		37.4	%	$	11,626		31.8	%

Deferred tax provision table text block [Table Text Block]

The components of the Company’s deferred income tax provision for the years ended December 31, 2011, 2010 and 2009 are as follows: 

	2011			2010			2009
Allowance for doubtful accounts	$	(24	)	$	(66	)	$	(17	)
Inventory reserves	1,147			(1,137		)	(297		)
Accruals	(464		)	(1,792		)	(114		)
State income taxes	(7		)	(290		)	(52		)
Acquired future tax deductions	293			300			300
Depreciation and amortization	(205		)	2,820			1,571
Tax credits	(264		)	387			(1,116		)
	$	476		$	222		$	275

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

	2011			2010
Current deferred tax assets:
State income taxes	$	343		$	549
Foreign	$	429		$	444
Accruals/other	$	1,377		$	1,827
Tax credits	$	452		$	—
Allowance for doubtful accounts	$	102		$	105
Inventory reserves	1,378			2,128
	$	4,081		$	5,053
Non-current deferred tax asset:
State income taxes	$	—		$	(33	)
Foreign	526			—
Accruals/other	347			—
Depreciation and amortization	(523		)	—
Tax credits state	4,409			4,597
	$	4,759		$	4,564
Non-current deferred tax liability:
State income taxes	$	(1,481	)	$	(1,661	)
Foreign	$	(2,633	)	$	(2,140	)
Accruals/other	$	(186	)	$	—
Depreciation and amortization	$	(6,862	)	$	(7,193	)
Acquired future tax deductions	(460		)	(28		)
Stock-based compensation	3,843			2,943
Foreign currency translation adjustments	635			56
	$	(7,144	)	$	(8,023	)

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

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The following table summarizes our cumulative gross unrecognized tax benefits for 2011, 2010 and 2009 : 

	2011			2010			2009
Beginning balance	$	4,411		$	5,306		$	4,887
Increases (decreases) to prior year tax positions	494			(649		)	(29		)
Increases to current year tax positions	764			518			536
Decrease related to settlements	(392		)	(764		)	(88		)
Decrease related to lapse of statute of limitations	(299		)	—			—
Ending balance	$	4,978		$	4,411		$	5,306