Taxation (Tables)

12 Months Ended

Dec. 31, 2014

IncomeTaxDisclosureTextBlockAbstract

Schedule of Income before Income Tax, Domestic and Foreign

The components of (loss) income before taxes for the years ended December 31 are as follows:

Origin of income before taxes	2014			2013		2012
United States	$	(25,142	)	$	6,025	$	5,655
Foreign	(661		)	1,840		(577		)
(Loss) income before taxes	$	(25,803	)	$	7,865	$	5,078

Schedule of Components of Income Tax Expense (Benefit)

Significant components of income tax (benefit) expense for the years ended December 31 are as follows:

	2014			2013			2012
Current:
Federal	$	158		$	1,114		$	1,529
State	(34		)	334			425
Foreign	1,108			836			471
Total current	1,232			2,284			2,425
Deferred:
Federal	(7,260		)	642			9
State	(959		)	(78		)	1
Foreign	(1,091		)	(84		)	(133		)
Total deferred	(9,310		)	480			(123		)
Income tax (benefit) expense	$	(8,078	)	$	2,764		$	2,302

Schedule of Effective Income Tax Rate Reconciliation

A reconciliation between the provision for income taxes calculated at the U.S. federal statutory income tax rate and the consolidated income tax expense in the consolidated statements of operations for the years ended December 31 is as follows:

	2014		2013		2012
Provision at the U.S. federal statutory rate	(34.0	)%	34.0	%	34.0	%
State taxes, net of federal benefit	(3.6	)%	1.9	%	4.2	%
Foreign tax rate differential	0.1	%	(2.5	)%	—	%
Valuation allowance	1.2	%	2.9	%	10.5	%
Research credits	(0.4	)%	(4.2	)%	(10.0	)%
Stock-based compensation	—	%	(0.4	)%	0.3	%
Goodwill impairment	5.9	%	—	%	—	%
Other	(0.5	)%	3.4	%	6.3	%
Income tax expense effective rate	(31.3	)%	35.1	%	45.3	%

Schedule of Deferred Tax Assets and Liabilities

The deferred tax assets and liabilities at December 31 are as follows:

	2014			2013
Deferred tax assets:
Stock compensation expense	$	4,631		$	4,922
Goodwill	3,110			—
Intangible assets	—			921
Other	2,419			902
Net operating loss carryforwards	2,006			1,833
Total deferred tax assets	12,166			8,578
Deferred tax liabilities:
Equipment	(1,096		)	(1,610		)
Intangible assets	(1,156		)	—
Goodwill	—			(3,792		)
Other	(306		)	(925		)
Total deferred tax liabilities	(2,558		)	(6,327		)
Net deferred tax asset before valuation allowance	9,608			2,251
Valuation allowances for deferred tax assets	(2,006		)	(1,833		)
Net deferred tax asset	$	7,602		$	418

Schedule of Amounts Recognized in Balance Sheet

Net deferred tax assets and liabilities are recorded as follows within the consolidated balance sheets:

Current assets	$	1,953	$	477
Long-term assets (liabilities)	5,649		(59		)
Net deferred tax asset	$	7,602	$	418

Summary of Valuation Allowance

The change in the valuation allowance for deferred tax assets for the years ended December 31 is as follows:

Year	Balance at January 1		Charged to costs and expenses	(Deductions)/Other		Balance at December 31
2012	$	1,327	—	541		$	1,868
2013	$	1,868	—	(35	)	$	1,833
2014	$	1,833	—	173		$	2,006

Schedule of Unrecognized Tax Benefits Roll Forward

The following table summarizes our unrecognized tax benefit activity (excluding interest and penalties) during the years ended December 31, 2014, 2013 and 2012:

Description	2014		2013			2012
Balance at beginning of period	$	65	$	39		$	505
Increases in positions taken in a current period	52		65			39
Decreases due to settlements	—		(39		)	(202		)
Decreases due to lapse of statute of limitations	—		—			(303		)
Balance at end of period	$	117	$	65		$	39