Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

Income before income taxes

	2012		2011		2010
Domestic	$	23,480	$	35,371	$	33,964
Foreign		8,030		3,274		336
Total	$	31,510	$	38,645	$	34,300

Components of the income tax provision

	2012			2011			2010
Current:
Federal	$	11,945		$	(1,083	)	$	8,722
State		3,038			738			1,571
Foreign		1,338			843			1,144
Total current		16,321			498			11,437
Deferred:
Federal		(4,449	)		13,485			2,301
State		(736	)		1,186			1,025
Foreign		(5,200	)		466			(970	)
Total deferred		(10,385	)		15,137			2,356
Income tax provision	$	5,936		$	15,635		$	13,793

Reconciliation of the federal statutory rate

	2012			2011			2010
Income tax provision at federal statutory rate		35.0	%		35.0	%		35.0	%
Increase (decrease) in tax resulting from:
State tax provision, net of federal benefit		4.9			3.1			5.0
Non-deductible expenses		0.4			1.6			2.2
Tax-exempt interest income		(0.5	)		(0.4	)		(1.3	)
Stock option compensation deduction		0.7			0.6			0.2
Change in valuation allowance		(0.8	)		1.1			(3.4	)
Exchange rate gain		(0.3	)		(0.5	)		(1.1	)
Foreign tax rate differential		(2.8	)		(1.0	)		—
Benefit upon audit settlement		(19.6	)		—			—
Other, net		1.8			1.0			3.6
Effective tax rate		18.8	%		40.5	%		40.2	%

Components of deferred income taxes

	2012			2011
Non-deductible reserves and accruals	$	4,105		$	3,125
Stock compensation		4,948			5,146
Net operating loss and other carryforwards		9,816			7,526
Gross deferred tax asset		18,869			15,797
Less—valuation allowance		(2,086	)		(3,077	)
Sub-total		16,783			12,720
Depreciation and amortization		(5,018	)		(7,996	)
Goodwill amortization		(4,381	)		(5,518	)
Other liabilities		(2,872	)		(3,347	)
Deferred commissions		(3,743	)		(4,775	)
Net deferred tax asset (liability)	$	769		$	(8,916	)

Summary of changes in deferred tax valuation allowance

	2012			2011			2010
Deferred tax valuation allowance at January 1	$	3,077		$	2,676		$	11,672
Additions		11			508			440
Deductions		(1,066	)		(85	)		(9,405	)
Translation adjustments		64			(22	)		(31	)
Deferred tax valuation allowance at December 31	$	2,086		$	3,077		$	2,676

Reconciliation of unrecognized tax benefits

	2012			2011			2010
Unrecognized tax benefits at January 1	$	1,269		$	1,222		$	919
Additions for tax positions of prior years		112			107			410
Reductions for tax positions of prior years		(37	)		—			—
Additions for tax positions of current year		1,271			17			77
Settlements		(582	)		—			—
Lapse of statute of limitations		(360	)		(77	)		(184	)
Translation adjustments		(2	)		—			—
Unrecognized tax benefits at December 31	$	1,671		$	1,269		$	1,222