Zix (ZIXI) 10-Q 4 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	ZIXI
Entity Registrant Name	ZIX CORP
Entity Central Index Key	855612
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		57,519,466

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$24,902	$21,685
Receivables, net	1,045	1,452
Prepaid and other current assets	2,122	2,372
Deferred tax assets	1,331	1,763
Total current assets	29,400	27,272
Property and equipment, net	4,650	4,399
Goodwill	2,161	2,161
Deferred tax assets	49,782	49,892
Total assets	85,993	83,724
Current liabilities:
Accounts payable	492	506
Accrued expenses	2,522	2,930
Deferred revenue	21,102	21,587
Total current liabilities	24,116	25,023
Long-term liabilities:
Deferred revenue	1,153	898
Deferred rent	1,506	1,533
Total long-term liabilities	2,659	2,431
Total liabilities	26,775	27,454
Commitments and contingencies (see Note 7)
Stockholders' equity:
Preferred stock, $1 par value, 10,000,000 shares authorized; none issued and outstanding
Common stock, $0.01 par value, 175,000,000 shares authorized; 75,461,287 issued and 57,375,827 outstanding in 2015 and 75,017,775 issued and 56,980,789 outstanding in 2014	745	741
Additional paid-in capital	363,532	361,579
Treasury stock, at cost; 18,085,460 common shares in 2015 and 18,036,986 common shares in 2014	-67,067	-66,882
Accumulated deficit	-237,992	-239,168
Total stockholders' equity	59,218	56,270
Total liabilities and stockholders' equity	$85,993	$83,724

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value	$1	$1
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	175,000,000	175,000,000
Common stock, shares issued	75,461,287	75,017,775
Common stock, shares outstanding	57,375,827	56,980,789
Treasury stock, shares	18,085,460	18,036,986

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenues	$13,073	$12,162
Cost of revenues	2,213	2,025
Gross margin	10,860	10,137
Operating expenses:
Research and development	2,105	2,201
Selling, general and administrative	6,915	6,289
Total operating expenses	9,020	8,490
Operating income	1,840	1,647
Other income, net	23	62
Income before income taxes	1,863	1,709
Income tax expense	-687	-650
Net Income	$1,176	$1,059
Basic income per common share	$0.02	$0.02
Diluted income per common share	$0.02	$0.02
Basic weighted average common shares outstanding	56,496,303	59,375,283
Diluted weighted average common shares outstanding	57,395,616	60,891,563

Condensed_Consolidated_Stateme1

Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (USD $)	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]
In Thousands, except Share data
Beginning balance at Dec. 31, 2014	$56,270	$741	$361,579	($66,882)	($239,168)
Beginning balance, shares	75,461,287	75,017,775
Issuance of common stock upon exercise of stock options	1,489	4	1,485
Issuance of common stock upon exercise of stock options, shares	406,012	406,012
Issuance of common stock upon vesting of restricted stock units		37,500
Employee stock-based compensation costs	283		468	-185
Net income	1,176				1,176
Ending balance at Mar. 31, 2015	$59,218	$745	$363,532	($67,067)	($237,992)
Ending balance, shares at Mar. 31, 2015		75,461,287

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating activities:
Net income	$1,176	$1,059
Non-cash items in net income:
Depreciation and amortization	504	399
Employee stock-based compensation costs	468	481
Changes in deferred taxes	542	537
Changes in operating assets and liabilities:
Receivables	407	-78
Prepaid and other current assets	250	387
Accounts payable	-153	-89
Deferred revenue	-230	-1,376
Accrued and other liabilities	-435	413
Net cash provided by operating activities	2,529	1,733
Investing activities:
Purchases of property and equipment	-616	-391
Net cash used in investing activities	-616	-391
Financing activities:
Proceeds from exercise of stock options	1,489	41
Purchase of treasury shares	-185	-6,403
Net cash provided by (used in) financing activities	1,304	-6,362
Increase (decrease) in cash and cash equivalents	3,217	-5,020
Cash and cash equivalents, beginning of period	21,685	27,518
Cash and cash equivalents, end of period	$24,902	$22,498

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	1. Basis of Presentation
	The accompanying condensed consolidated financial statements of Zix Corporation (“ZixCorp®,” the “Company,” “we,” “our,” “us”) should be read in conjunction with the audited consolidated financial statements included in the Company’s 2014 Annual Report on Form 10-K. These financial statements are unaudited, but have been prepared in the ordinary course of business for the purpose of providing information with respect to the covered interim periods. Management of the Company believes that all adjustments necessary for a fair presentation for such periods have been included and are of a normal recurring nature. The results of operations for the three-month period ended March 31, 2015, are not necessarily indicative of the results to be expected for any future periods or for the full fiscal year.

Recent_Accounting_Standards_an

Recent Accounting Standards and Pronouncements	3 Months Ended
	Mar. 31, 2015
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Standards and Pronouncements	2. Recent Accounting Standards and Pronouncements
	Revenue Recognition
	In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09), which supersedes most current revenue recognition guidance under U.S. GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU 2014-09 defines a five step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing U.S. GAAP.
	The standard is effective for us beginning 2017, and requires using either of the following transition methods: (i) a full retrospective approach reflecting the application of the standard in each prior reporting period with the option to elect certain practical expedients, or (ii) a retrospective approach with the cumulative effect of initially adopting ASU 2014-09 recognized at the date of adoption (which includes additional footnote disclosures). We are currently evaluating the impact of our pending adoption of ASU 2014-09 on our consolidated financial statements and have not yet determined the method by which we will adopt the standard in 2017.
	Debt Issuance
	In April 2015, the FASB issued Accounting Standards Update No. 2015-03, Simplifying the Presentation of Debt Issuance Costs (ASU 2015-03), which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The standard is effective for us beginning of 2016, and is not expected to have a material impact on our consolidated financial statements.

StockBased_Awards_and_StockBas

Stock-Based Awards and Stock-Based Employee Compensation Expense	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Awards and Stock-Based Employee Compensation Expense	3. Stock-Based Awards and Stock-Based Employee Compensation Expense
	Our stock-based awards include stock options, restricted stock awards (“RSA’s”), and restricted stock units (“RSU’s”). As of March 31, 2015, the Company had 4,044,497 stock options outstanding and 194,404 shares available for grant.
	Stock Option Activity
	There were 406,012 stock options exercised for the three month period ended March 31, 2015, and 16,473 stock options exercised for the three month period ended March 31, 2014. There was no excess tax benefit recorded in the three month period ended March 31, 2015, related to the 406,012 option exercises.
	The following is a summary of all stock option transactions during the three months ended March 31, 2015:
		Options			Weighted		Weighted Average
					Average		Remaining
					Exercise Price		Contractual Term
							(Yrs)
	Outstanding at December 31, 2014		4,490,509		$	3.42
	Granted at market price		—			—
	Cancelled or expired		(40,000	)	$	4.99
	Exercised		(406,012	)	$	3.67
	Outstanding at March 31, 2015		4,044,497		$	3.39		4.15
	Options exercisable at March 31, 2015		3,772,778		$	3.44		3.91
	At March 31, 2015, we had 2,660,689 stock options outstanding and 2,388,980 options exercisable in which the exercise price was lower than the market price of the Company’s common stock. The aggregate intrinsic value of these options was $3.1 million and $2.8 million, respectively.
	Restricted Stock Activity
	The following is a summary of all RSA activity during the three months ended March 31, 2015:
		Restricted			Weighted
		Shares			Average
					Fair Value
	Outstanding at December 31, 2014		604,250		$	3.45
	Granted at market price		—			—
	Vested		(131,250	)		3.77
	Cancelled		—			—
	Unvested restricted stock at March 31, 2015		473,000		$	3.36
	A $2 thousand excess tax benefit was recorded in the three month period ended March 31, 2015, related to the 131,250 vesting RSA’s.
	Restricted Stock Unit Activity
	The following is a summary of all RSU activity during the three months ended March 31, 2015:
		Restricted			Weighted
		Stock Units			Average
					Fair Value
	Non-vested at December 31, 2014		182,750		$	3.52
	Granted at market price		215,000			3.88
	Vested		(37,500	)		3.89
	Cancelled		—			—
	Unvested restricted stock units at March 31, 2015		360,250		$	3.69
	Performance Unit Activity
	The following is a summary of all performance unit (“PU”) activity during the three months ended March 31, 2015:
		Restricted			Weighted
		Stock Units			Average
					Fair Value
	Non-vested at December 31, 2014		—			—
	Granted at market price		215,000		$	3.88
	Vested		—			—
	Cancelled		—			—
	Unvested restricted stock units at March 31, 2015		215,000		$	3.88
	The weighted average grant-date fair value of awards of restricted stock, RSU’s (collectively “restricted stock”), and PU’s is based on the quoted market price of the Company’s common stock on the date of grant.
	Stock-Based Compensation Expense
	For the three month period ended March 31, 2015, the total stock-based employee compensation expense resulting from stock options, restricted stock, RSU’s, and PU’s was recorded to the following line items of the Company’s condensed consolidated statements of income:
	(In thousands)	Three Months			Three Months
		Ended March 31,			Ended March 31,
		2015			2014
	Cost of revenues	$	51		$	51
	Research and development		66			60
	Selling, general and administrative		351			370
	Stock-based compensation expense	$	468		$	481
	A deferred tax asset totaling $128 thousand and $135 thousand, resulting from stock-based compensation expense associated with awards relating to the Company’s U.S. operations, was recorded for the three month periods ended March 31, 2015 and 2014, respectively. As of March 31, 2015, there was $3.6 million of total unrecognized stock-based compensation related to non-vested stock-based compensation awards granted under the incentive plans. This cost is expected to be recognized over a weighted average period of 1.60 years.
	For additional information regarding the Company’s Equity Awards and Stock-based Employee Compensation, see Note 3 to the consolidated financial statements contained in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	3 Months Ended
	Mar. 31, 2015
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	4. Supplemental Cash Flow Information
	Supplemental cash flow information relating to taxes and non-cash activities:
		Three Months Ended March 31,
	(In thousands)	2015			2014
	Cash income tax payments	$	74		$	124
	Non-cash investing and financing activities:
	Payables related to purchases of capitalized assets	$	(139	)	$	39
	Excess tax benefit on exercise of employee stock options	$	—		$	1
	Excess tax benefit on vesting of restricted awards	$	2		$	41

Receivables_Net

Receivables, Net	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Receivables, Net	5. Receivables, net
	(In thousands)	March 31,			December 31,
		2015			2014
	Gross Accounts Receivables	$	7,867		$	8,116
	Allowance for returns and doubtful accounts		(68	)		(108	)
	Unpaid portion of deferred revenue		(6,754	)		(6,556	)
	Note receivable		458			458
	Allowance for note receivable		(458	)		(458	)
	Receivables, net	$	1,045		$	1,452
	Our gross accounts receivables for the year ended 2014 included $318 thousand associated with a tenant improvement allowance received as an incentive when we renewed the lease for our Dallas headquarters in 2013. The tenant improvement receivable was collected in full at March 31, 2015.
	The allowance for doubtful accounts includes all specific accounts receivable which we believe are likely not collectible based on known information. In addition, we record 2.5% of all accounts receivable greater than 90 days past due, net of those accounts specifically reserved, as a general allowance against accounts that could potentially become uncollectible.
	The reduction for deferred revenue represents future customer service or maintenance obligations which have been billed to customers, but remain unpaid as of the respective balance sheet dates. Deferred revenue on our consolidated balance sheets represents future customer service or maintenance obligations which have been billed and collected as of the respective balance sheet dates.
	The note receivable represents the remaining outstanding balance of an original note related to the sale of a product line in 2005 in the amount of $540 thousand. This was fully reserved at the time of the sale as the note’s collectability was not assured. The note receivable is fully reserved at March 31, 2015.

Earnings_Per_Share_and_Potenti

Earnings Per Share and Potential Dilution	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share and Potential Dilution	6. Earnings Per Share and Potential Dilution
	Basic earnings per share are computed using the weighted average number of common shares outstanding for the period. The dilutive effect of potential common shares outstanding is included in diluted earnings per share. The computations for basic and diluted earnings per share for the three months ended March 31, 2015 and 2014, are as follows:
		March 31,
		2015		2014
	Basic weighted average shares		56,496,303		59,375,283
	Effect of dilutive securities:
	Employee and director stock options		663,926		1,174,657
	Restricted Stock		180,308		265,098
	RSU’s		55,079		76,320
	PU’s		—		205
	Potential dilutive common shares		57,395,616		60,891,563
	During the three months ended March 31, 2015, weighted average shares related to 2,109,962 stock options, 105,000 shares of restricted stock, 106,548 RSU’s and 97,944 PU’s were excluded from the calculation of diluted earnings per share because they were anti-dilutive. During the three months ended March 31, 2014, weighted average shares related to 2,602,755 stock options, 46,667 shares of restricted stock, 18,333 RSU’s and 33,333 PU’s were excluded from the calculation of diluted earnings per share because they were similarly anti-dilutive.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	7. Commitments and contingencies
	A summary of our fixed contractual obligations and commitments at March 31, 2015, is as follows:
		Payments Due by Period
	(In thousands)	Total		1 Year		Years 2 & 3		Years 4 & 5		Beyond 5 Years
	Operating leases	$	10,480	$	1,370	$	2,158	$	2,049	$	4,903
	We have not entered into any material, non-cancelable purchase commitments at March 31, 2015.
	Claims and Proceedings
	We are from time to time involved in legal claims, litigation, and other legal proceedings. Although we may incur significant expenses in those matters, we do not expect a material adverse effect on our operations or financial results from current or concluded legal proceedings.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	8. Fair Value Measurements
	FASB guidance regarding fair value measurement establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets for identical assets or liabilities; Level 2, defined as inputs other than quoted prices for similar assets and liabilities in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs for which little or no market data exists, therefore requiring an entity to develop its own assumptions.
	For certain of the Company’s financial instruments, including cash and cash equivalents, trade receivables, and accounts payable, the fair values approximate carrying values due to the short-term maturities of these instruments. The carrying values of other current assets and accrued expenses are also not recorded at fair value, but approximate fair values primarily due to their short-term nature.

Common_Stock_Repurchase_Progra

Common Stock Repurchase Program	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Common Stock Repurchase Program	9. Common Stock Repurchase Program
	On January 6, 2015, the Company’s board of directors approved a share repurchase program that enables the Company to purchase up to $10 million of its shares of common stock. The amount and timing of specific repurchases are subject to market conditions, applicable legal requirements and other factors. Any share purchases would be funded from existing cash resources and may be suspended or discontinued at any time. No shares were repurchased during the three months ended March 31, 2015, under this program. The share repurchase program will expire on July 31, 2015.
	During the three months ended March 31, 2014, the Company repurchased 1,407,129 shares at an aggregate cost of $6.2 million, completing a $15 million share repurchase program authorized by our board of directors in 2013.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes
	The operating losses incurred by the Company’s U.S. operations in past years and the resulting net operating losses for U.S. Federal tax purposes are subject to a $46 million reserve. Any reduction to this $46 million valuation allowance is based on an assessment of future utilization following accounting guidance, which relies largely on historical earnings. Using this methodology, and updating the future taxable earnings estimates based on first quarter 2015 actual earnings, the Company believes the deferred tax asset allowance as of December 31, 2014, will remain unchanged at December 31, 2015. For this reason, the Company has recognized its first quarter 2015 federal deferred tax provision in full. If in prospective periods we conclude our future U.S. federal taxable estimate established at the end year will exceed the prior year estimate, the Company will offset its federal deferred tax provision by reducing its valuation allowance by an equal amount, thereby eliminating from its deferred tax provision federal taxes in excess of the estimated Alternative Minimum Tax from the Company’s financial statements. The Company will continue to reevaluate the need for its valuation allowance each quarter, following the same assessment methodology described above. Adjusting our valuation allowance could have a significant impact on operating results for each period that it becomes more likely than not that an additional portion of our deferred tax assets will or will not be realized.

Recent_Accounting_Standards_an1

Recent Accounting Standards and Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Changes and Error Corrections [Abstract]
Revenue Recognition	Revenue Recognition
	In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09), which supersedes most current revenue recognition guidance under U.S. GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU 2014-09 defines a five step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing U.S. GAAP.
	The standard is effective for us beginning 2017, and requires using either of the following transition methods: (i) a full retrospective approach reflecting the application of the standard in each prior reporting period with the option to elect certain practical expedients, or (ii) a retrospective approach with the cumulative effect of initially adopting ASU 2014-09 recognized at the date of adoption (which includes additional footnote disclosures). We are currently evaluating the impact of our pending adoption of ASU 2014-09 on our consolidated financial statements and have not yet determined the method by which we will adopt the standard in 2017.
Debt Issuance	Debt Issuance
	In April 2015, the FASB issued Accounting Standards Update No. 2015-03, Simplifying the Presentation of Debt Issuance Costs (ASU 2015-03), which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The standard is effective for us beginning of 2016, and is not expected to have a material impact on our consolidated financial statements.
Fair Value Measurements	FASB guidance regarding fair value measurement establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets for identical assets or liabilities; Level 2, defined as inputs other than quoted prices for similar assets and liabilities in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs for which little or no market data exists, therefore requiring an entity to develop its own assumptions.
	For certain of the Company’s financial instruments, including cash and cash equivalents, trade receivables, and accounts payable, the fair values approximate carrying values due to the short-term maturities of these instruments. The carrying values of other current assets and accrued expenses are also not recorded at fair value, but approximate fair values primarily due to their short-term nature.

StockBased_Awards_and_StockBas1

Stock-Based Awards and Stock-Based Employee Compensation Expense (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of All Stock Option Transactions	The following is a summary of all stock option transactions during the three months ended March 31, 2015:
		Options			Weighted		Weighted Average
					Average		Remaining
					Exercise Price		Contractual Term
							(Yrs)
	Outstanding at December 31, 2014		4,490,509		$	3.42
	Granted at market price		—			—
	Cancelled or expired		(40,000	)	$	4.99
	Exercised		(406,012	)	$	3.67
	Outstanding at March 31, 2015		4,044,497		$	3.39		4.15
	Options exercisable at March 31, 2015		3,772,778		$	3.44		3.91
Summary of All Restricted Stock Activity	The following is a summary of all RSA activity during the three months ended March 31, 2015:
		Restricted			Weighted
		Shares			Average
					Fair Value
	Outstanding at December 31, 2014		604,250		$	3.45
	Granted at market price		—			—
	Vested		(131,250	)		3.77
	Cancelled		—			—
	Unvested restricted stock at March 31, 2015		473,000		$	3.36
Summary of All Restricted Stock Unit Activity	The following is a summary of all RSU activity during the three months ended March 31, 2015:
		Restricted			Weighted
		Stock Units			Average
					Fair Value
	Non-vested at December 31, 2014		182,750		$	3.52
	Granted at market price		215,000			3.88
	Vested		(37,500	)		3.89
	Cancelled		—			—
	Unvested restricted stock units at March 31, 2015		360,250		$	3.69
Summary of All Performance Unit Activity	The following is a summary of all performance unit (“PU”) activity during the three months ended March 31, 2015:
		Restricted			Weighted
		Stock Units			Average
					Fair Value
	Non-vested at December 31, 2014		—			—
	Granted at market price		215,000		$	3.88
	Vested		—			—
	Cancelled		—			—
	Unvested restricted stock units at March 31, 2015		215,000		$	3.88
Summary of Stock-Based Employee Compensation Expense	For the three month period ended March 31, 2015, the total stock-based employee compensation expense resulting from stock options, restricted stock, RSU’s, and PU’s was recorded to the following line items of the Company’s condensed consolidated statements of income:
	(In thousands)	Three Months			Three Months
		Ended March 31,			Ended March 31,
		2015			2014
	Cost of revenues	$	51		$	51
	Research and development		66			60
	Selling, general and administrative		351			370
	Stock-based compensation expense	$	468		$	481

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	3 Months Ended
	Mar. 31, 2015
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information Relating to Taxes and Non-Cash Activities	Supplemental cash flow information relating to taxes and non-cash activities:
		Three Months Ended March 31,
	(In thousands)	2015			2014
	Cash income tax payments	$	74		$	124
	Non-cash investing and financing activities:
	Payables related to purchases of capitalized assets	$	(139	)	$	39
	Excess tax benefit on exercise of employee stock options	$	—		$	1
	Excess tax benefit on vesting of restricted awards	$	2		$	41

Receivables_Net_Tables

Receivables, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Summary of Net Receivables
	(In thousands)	March 31,			December 31,
		2015			2014
	Gross Accounts Receivables	$	7,867		$	8,116
	Allowance for returns and doubtful accounts		(68	)		(108	)
	Unpaid portion of deferred revenue		(6,754	)		(6,556	)
	Note receivable		458			458
	Allowance for note receivable		(458	)		(458	)
	Receivables, net	$	1,045		$	1,452

Earnings_Per_Share_and_Potenti1

Earnings Per Share and Potential Dilution (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Computations of Basic and Diluted Earnings Per Share	The computations for basic and diluted earnings per share for the three months ended March 31, 2015 and 2014, are as follows:
		March 31,
		2015		2014
	Basic weighted average shares		56,496,303		59,375,283
	Effect of dilutive securities:
	Employee and director stock options		663,926		1,174,657
	Restricted Stock		180,308		265,098
	RSU’s		55,079		76,320
	PU’s		—		205
	Potential dilutive common shares		57,395,616		60,891,563

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Summary of Fixed Contractual Obligations and Commitments	A summary of our fixed contractual obligations and commitments at March 31, 2015, is as follows:
		Payments Due by Period
	(In thousands)	Total		1 Year		Years 2 & 3		Years 4 & 5		Beyond 5 Years
	Operating leases	$	10,480	$	1,370	$	2,158	$	2,049	$	4,903

StockBased_Awards_and_StockBas2

Stock-Based Awards and Stock-Based Employee Compensation Expense - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Share Based Compensation [Line Items]
Options Outstanding	4,044,497		4,490,509
Shares available for grant	194,404
Stock option exercised	406,012	16,473
Excess tax benefit on exercise of employee stock options	$0	$1,000
Options, options exercisable	3,772,778
Tax benefit from RSA's vested	2,000	41,000
Deferred tax assets, tax deferred expense compensation and benefits employee compensation	128,000	135,000
Total unrecognized stock-based compensation related to non-vested stock-based compensation awards	3,600,000
The number of years over which cost is expected to be recognized	1 year 7 months 6 days
Restricted Stock [Member]
Share Based Compensation [Line Items]
Restricted Shares, Vested	-131,250
Employee and Director Stock Options [Member]
Share Based Compensation [Line Items]
Options Outstanding	2,660,689
Options, options exercisable	2,388,980
Aggregate intrinsic value of options outstanding	3,100,000
Aggregate intrinsic value of options exercisable	$2,800,000

StockBased_Awards_and_StockBas3

Stock-Based Awards and Stock-Based Employee Compensation Expense - Summary of All Stock Option Transactions (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options, Outstanding, Beginning Balance	4,490,509
Options, Granted at market price	0
Options, Cancelled or expired	-40,000
Options, Exercised	-406,012	-16,473
Options, Outstanding Ending Balance	4,044,497
Options, Options Exercisable	3,772,778
Weighted Average Exercise Price, Outstanding, Beginning Balance	$3.42
Weighted Average Exercise Price, Granted at market price	$0
Weighted Average Exercise Price, Cancelled or expired	$4.99
Weighted Average Exercise Price, Exercised	$3.67
Weighted Average Exercise Price, Outstanding, Ending Balance	$3.39
Weighted Average Exercise Price, Options exercisable	$3.44
Weighted Average Remaining Contractual Term, Outstanding	4 years 1 month 24 days
Weighted Average Remaining Contractual Term, Options exercisable	3 years 10 months 28 days

StockBased_Awards_and_StockBas4

Stock-Based Awards and Stock-Based Employee Compensation Expense - Summary of All Restricted Stock Activity (Detail) (Restricted Stock [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Shares, Unvested Beginning balance	604,250
Restricted Shares, Granted at market price	0
Restricted Shares, Vested	-131,250
Restricted Shares, Cancelled	0
Unvested restricted stock, Ending balance	473,000
Weighted Average Fair Value, Non-vested, Beginning balance	$3.45
Weighted Average Fair Value, Granted at market price	$0
Weighted Average Fair Value, Vested	$3.77
Weighted Average Fair Value, Cancelled	$0
Weighted Average Fair Value, Unvested restricted stock, Ending balance	$3.36

StockBased_Awards_and_StockBas5

Stock-Based Awards and Stock-Based Employee Compensation Expense - Summary of All Restricted Stock Unit Activity (Detail) (Restricted Stock Units (RSUs) [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Shares, Unvested Beginning balance	182,750
Restricted Shares, Granted at market price	215,000
Restricted Shares, Vested	-37,500
Restricted Shares, Cancelled	0
Unvested restricted stock, Ending balance	360,250
Weighted Average Fair Value, Non-vested, Beginning balance	$3.52
Weighted Average Fair Value, Granted at market price	$3.88
Weighted Average Fair Value, Vested	$3.89
Weighted Average Fair Value, Cancelled	$0
Weighted Average Fair Value, Unvested restricted stock, Ending balance	$3.69

StockBased_Awards_and_StockBas6

Stock-Based Awards and Stock-Based Employee Compensation Expense - Summary of Performance Unit Activity (Detail) (Performance Units [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Performance Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Shares, Unvested Beginning balance	0
Restricted Shares, Granted at market price	215,000
Restricted Shares, Vested	0
Restricted Shares, Cancelled	0
Unvested restricted stock, Ending balance	215,000
Weighted Average Fair Value, Non-vested, Beginning balance	$0
Weighted Average Fair Value, Granted at market price	$3.88
Weighted Average Fair Value, Vested	$0
Weighted Average Fair Value, Cancelled	$0
Weighted Average Fair Value, Unvested restricted stock, Ending balance	$3.88

StockBased_Awards_and_StockBas7

Stock-Based Awards and Stock-Based Employee Compensation Expense - Summary of Stock-Based Employee Compensation Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$468	$481
Cost of Revenues [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	51	51
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	66	60
Selling, General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$351	$370

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information - Supplemental Cash Flow Information Relating to Taxes and Non-Cash Activities (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
Cash income tax payments	$74	$124
Non-cash investing and financing activities:
Payables related to purchases of capitalized assets	-139	39
Excess tax benefit on exercise of employee stock options	0	1
Excess tax benefit on vesting of restricted awards	$2	$41

Receivables_Net_Summary_of_Net

Receivables, Net - Summary of Net Receivables (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable, Net, Current [Abstract]
Gross Accounts Receivables	$7,867	$8,116
Allowance for returns and doubtful accounts	-68	-108
Unpaid portion of deferred revenue	-6,754	-6,556
Note receivable	458	458
Allowance for note receivable	-458	-458
Receivables, net	$1,045	$1,452

Receivables_Net_Additional_Inf

Receivables, Net - Additional Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of doubtful debts on accounts receivable	2.50%
Gross Accounts Receivables	$7,867	$8,116
Note receivable on a product line	540
Date of note receivable, reserved	31-Mar-15
Tenant Improvement Allowance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross Accounts Receivables	$318

Earnings_Per_Share_and_Potenti2

Earnings Per Share and Potential Dilution - Computations of Basic and Diluted Earnings Per Share (Detail)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Weighted Average Number of Shares [Line Items]
Basic weighted average shares	56,496,303	59,375,283
Potential dilutive common shares	57,395,616	60,891,563
Employee and Director Stock Options [Member]
Weighted Average Number of Shares [Line Items]
Effect of dilutive securities	663,926	1,174,657
Restricted Stock [Member]
Weighted Average Number of Shares [Line Items]
Effect of dilutive securities	180,308	265,098
Restricted Stock Units (RSUs) [Member]
Weighted Average Number of Shares [Line Items]
Effect of dilutive securities	55,079	76,320
Performance Units [Member]
Weighted Average Number of Shares [Line Items]
Effect of dilutive securities		205

Earnings_Per_Share_and_Potenti3

Earnings Per Share and Potential Dilution - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Employee and Director Stock Options [Member]
Weighted Average Number of Shares [Line Items]
Effect of dilutive securities	2,109,962	2,602,755
Restricted Stock [Member]
Weighted Average Number of Shares [Line Items]
Effect of dilutive securities	105,000	46,667
Restricted Stock Units (RSUs) [Member]
Weighted Average Number of Shares [Line Items]
Effect of dilutive securities	106,548	18,333
Performance Units [Member]
Weighted Average Number of Shares [Line Items]
Effect of dilutive securities	97,944	33,333

Commitments_and_Contingencies_1

Commitments and Contingencies - Summary of Fixed Contractual Obligations and Commitments (Detail) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating leases, Total	$10,480
Operating leases, 1 Year	1,370
Operating leases, 2 & 3 Years	2,158
Operating leases, 4 & 5 Years	2,049
Operating leases, Beyond 5 Years	$4,903

Common_Stock_Repurchase_Progra1

Common Stock Repurchase Program - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Nov. 06, 2013	Jan. 06, 2015
Equity, Class of Treasury Stock [Line Items]
Share repurchase program authorized amount			$15,000,000
Shares repurchased	0	1,407,129
Share repurchase program expiration date	31-Jul-15
Treasury repurchase program		6,200,000
Maximum [Member]
Equity, Class of Treasury Stock [Line Items]
Share repurchase program authorized amount				$10,000,000

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	Mar. 31, 2015
In Millions, unless otherwise specified
Income Tax Disclosure [Abstract]
Operating loss carryforwards	$46