Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Income (loss) from Continuing Operations Before Income Taxes

“Income (loss) from continuing operations before income taxes” in the Consolidated Statements of Operations included the following components for the periods presented (in thousands):

	Years Ended December 31,
	2016		2015			2014
U.S.	$	23,818	$	(30,402	)	$	11,533
Foreign		4,890		1,060			992
Income (loss) from continuing operations before income taxes	$	28,708	$	(29,342	)	$	12,525

Schedule of Income Tax Expense (Benefit)

“Income tax expense (benefit)” in the Consolidated Statements of Operations consisted of the following for the periods presented (in thousands):

	Years Ended December 31,
	2016			2015			2014
Current
Federal	$	7,008		$	(2,616	)	$	260
State		949			81			405
Foreign		1,910			719			613
Total — Current		9,867			(1,816	)		1,278
Deferred
Federal		1,346			(8,303	)		3,847
State		269			(1,155	)		545
Foreign		(367	)		(120	)		(180	)
Total — Deferred		1,248			(9,578	)		4,212
Income tax expense (benefit)	$	11,115		$	(11,394	)	$	5,490

Schedule of Provision for Income Taxes Federal Statutory Rate

The provision for income taxes differed from the amount computed by applying the U.S. federal statutory rate to “Income (loss) from continuing operations before income taxes” due to the effects of the following:

	Years Ended December 31,
	2016			2015			2014
Expected taxes at federal statutory tax rate		35.0	%		35.0	%		35.0	%
State income taxes, net of federal income tax benefit		3.8			3.2			7.6
Research tax credits		(0.2	)		2.8			—
Change in valuation allowance		(0.7	)		(0.4	)		(1.9	)
Non-deductible business expenses		1.5			(1.2	)		2.8
Foreign rate differential		(1.4	)		0.3			(0.8	)
Other		0.7			(0.9	)		1.1
Total		38.7	%		38.8	%		43.8	%

Schedule of Significant Components of Deferred Tax Assets and Liabilities

The significant components of deferred tax assets and liabilities were as follows (in thousands):

	At December 31,
	2016			2015
Deferred tax assets :
Accounts receivable	$	287		$	215
Inventories		567			111
Deferred revenue		341			187
Accrued expenses and reserves		4,064			3,946
Stock based compensation		2,277			2,697
Tax credits and loss carryforwards		1,610			4,372
Other		9			15
Total gross deferred tax assets		9,155			11,543
Less: Valuation allowance		(711	)		(911	)
Total deferred tax assets		8,444			10,632
Deferred tax liabilities:
Property and equipment		(4,638	)		(5,102	)
Intangibles		(2,196	)		(2,550	)
Foreign employment tax subsidy		(1,083	)		(1,178	)
Prepaid expenses		(881	)		(914	)
Other		(198	)		(168	)
Total deferred tax liabilities		(8,996	)		(9,912	)
Net deferred tax assets (liabilities)	$	(552	)	$	720

Schedule of Unrecognized Tax Benefits

There were no unrecognized tax benefits during 2014. Activity relating to our unrecognized tax benefits were as follows (in thousands):

	Years Ended December 31,
	2016		2015
Beginning balance	$	420	$	—
Additions to tax positions		54		420
Ending balance	$	474	$	420