Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

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

The components of income tax expense (benefit) are as follows:



	Year Ended December 31,
	2015		2014			2013
Current:
Federal	$	1,012	$	(124	)	$	(1,790	)
State	439		198			(122		)
Foreign	3,425		1,812			1,497
	4,876		1,886			(415		)
Deferred:
Federal	3,881		(4,285		)	(2,378		)
State	71		54			938
Foreign	28		294			(70		)
	3,980		(3,937		)	(1,510		)
Total income tax expense (benefit)	$	8,856	$	(2,051	)	$	(1,925	)

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

The income (loss) before tax are comprised of the following:



	Year Ended December 31,
	2015		2014			2013
Domestic operations	$	10,596	$	(11,985	)	$	(4,860	)
Foreign operations	$	16,216	$	5,294		$	6,393

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

The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. federal income tax rate of 35% for the years ended December 31, 2015, 2014 and 2013 to income before provision for income taxes as follows:



	Year Ended December 31,
	2015			2014			2013
Federal income tax provision at statutory rate	$	9,384		$	(2,342	)	$	537
State taxes, net of federal effect	370			21			828
Foreign taxes net of federal effect	754			561			(1,514		)
Domestic manufacturing benefit	(553		)	—			—
Change in valuation allowance for deferred tax assets	(653		)	535			(153		)
Research tax credit	(694		)	(830		)	(1,965		)
Deferred tax true-up	(23		)	(36		)	401
Other	271			40			(59		)
Provision (benefit) for income taxes	$	8,856		$	(2,051	)	$	(1,925	)
Effective tax rate	33		%	31		%	(126		)%

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

Deferred tax assets and liabilities are comprised of the following:



	December 31,
	2015			2014
Research and development credit carryforward	$	6,647		$	7,496
Reserves and accruals not currently deductible	3,357			3,304
Deferred revenue	1,988			2,005
Domestic net operating loss carryforwards	1,302			1,928
Foreign net operating loss and credit carryforwards	4,347			7,533
Intangibles	11,614			12,943
Tax deductible transaction costs	260			296
Share-based compensation	3,396			1,762
Inventory obsolescence reserve	4,026			3,338
Depreciation	484			923
Other	87			776
Gross deferred tax assets	37,508			42,304
Valuation allowance for deferred tax assets	(2,205		)	(2,445		)
Deferred tax assets after valuation allowance	35,303			39,859
Gross deferred tax liabilities	(330		)	(525		)
Net deferred tax assets	$	34,973		$	39,334

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

The total amount of unrecognized tax benefits were as follows:



	December 31,
	2015			2014			2013
Unrecognized tax benefits, opening balance	$	5,292		$	5,706		$	9,566
Gross increases—tax positions in prior period	136			150			533
Gross decreases—tax positions in prior period	(755		)	(892		)	(4,992		)
Gross increases—current-period tax positions	563			328			599
Lapse of statute of limitations	—			—			—
Unrecognized tax benefits, ending balance	$	5,236		$	5,292		$	5,706