Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

The following is a geographical breakdown of income before the provision for income taxes:

	Year Ended
	December 31, 2014		December 31, 2013		December 31, 2012
	(In thousands)
Domestic	$	48,327	$	34,678	$	25,794
Foreign	177		351		1,281
Income before provision for income taxes	$	48,504	$	35,029	$	27,075

Schedule of Components of Income Tax Expense (Benefit)

The provision for income taxes consists of the following:

	Year Ended
	December 31, 2014			December 31, 2013			December 31, 2012
	(In thousands)
Current:
Federal	$	14,063		$	8,218		$	7,181
State	2,274			1,621			1,006
Foreign	192			447			154
Total current income taxes	16,529			10,286			8,341
Deferred:
Federal	1,603			1,287			2,169
State	84			(263		)	651
Foreign	(230		)	(260		)	(264		)
Total deferred income taxes	1,457			764			2,556
Total provision for income taxes	$	17,986		$	11,050		$	10,897

Schedule of Effective Income Tax Rate Reconciliation

The provision for income taxes differs from the amount computed by applying the statutory federal tax rate as follows:

	Year Ended
	December 31, 2014			December 31, 2013			December 31, 2012
	(In thousands)
U.S. federal tax provision at statutory rate	$	16,998		$	12,260		$	9,476
State taxes	1,533			883			1,077
Non-deductible expenses	809			297			530
Acquisition costs	229			—			431
Share-based compensation expense	461			407			403
Research tax credits	(818		)	(1,430		)	—
Domestic production deduction	(1,127		)	(816		)	(601		)
Other	(99		)	(551		)	(419		)
Total provision for income taxes	$	17,986		$	11,050		$	10,897

Schedule of Deferred Tax Assets and Liabilities

Significant components of our deferred tax assets (liabilities) are as follows:

	December 31, 2014			December 31, 2013
	(In thousands)
Deferred tax assets (liabilities):
Deferred revenue	$	12,639		$	11,074
Stock compensation	6,287			7,447
Inventory related items	2,713			2,947
Tax credit carry forwards	2,168			3,160
Reserves and accruals	327			—
Loss carry forwards	12			64
Other, net	—			5
Subtotal	24,146			24,697
Less: valuation allowance	—			(39		)
Total net deferred tax assets	24,146			24,658
Intangibles	(26,485		)	(26,604		)
Depreciation and amortization	(14,331		)	(12,077		)
Reserves and accruals	—			(353		)
Other, net	(194		)	—
Total deferred tax liabilities	(41,010		)	(39,034		)
Net deferred tax liabilities	$	(16,864	)	$	(14,376	)

Schedule of Unrecognized Tax Benefits

The aggregate change in the balance of gross unrecognized tax benefits, which excludes interest and penalties, is as follows:

	(In thousands)
Year Ended December 31, 2011	$	5,796
Increases related to tax positions taken during a prior period	43
Increases related to tax positions related to MTS	1,066
Decreases related to tax positions taken during the prior period	—
Increases related to tax positions taken during the current period	422
Decreases related to settlements	(33		)
Decreases related to expiration of statute of limitations	(379		)
Year Ended December 31, 2012	$	6,915
Increases related to tax positions taken during a prior period	406
Decreases related to tax positions taken during the prior period	(79		)
Increases related to tax positions taken during the current period	764
Decreases related to settlements	—
Decreases related to expiration of statute of limitations	(32		)
Year Ended December 31, 2013	$	7,974
Increases related to tax positions taken during a prior period	63
Decreases related to tax positions taken during the prior period	(89		)
Increases related to tax positions taken during the current period	801
Decreases related to settlements	—
Decreases related to expiration of statute of limitations	(264		)
Year Ended December 31, 2014	$	8,485