Organization, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
Dec. 31, 2014 Institution ServiceProvider Business_Unit Customer	Dec. 31, 2013 ServiceProvider Customer	Dec. 31, 2012 ServiceProvider Customer
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Experience in operation period	30 years
Number of customers concentrated	2	3	2
Number of service providers concentrated	1	1	0
Financial institutions to held securities	2
Cash and cash equivalents original maturity dates	Three months or less
Bank balances	$ 9,900,000us-gaap_CashUninsuredAmount	$ 11,600,000us-gaap_CashUninsuredAmount
Inventory components	100,000	100,000
Inventory assembled products		100,000
Costs capitalized	0
Number of operating groups	2us-gaap_NumberOfOperatingSegments
Advertising expenses	300,000us-gaap_AdvertisingExpense	400,000us-gaap_AdvertisingExpense	600,000us-gaap_AdvertisingExpense
Customer Concentration Risk [Member] \| Revenues [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration percentage	79.20%	77.50%	61.20%
Customer Concentration Risk [Member] \| Accounts receivable [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration percentage	87.00%	83.00%	78.00%
Supplier concentration risk [Member] \| Accounts payable [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration percentage	27.00%	28.00%
Productivity & Graphics [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Total sales incentives	$ 500,000	$ 1,200,000	$ 900,000
Minimum [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of the assets	3 years
Minimum [Member] \| Customer Concentration Risk [Member] \| Revenues [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration percentage	10.00%	10.00%	10.00%
Minimum [Member] \| Supplier concentration risk [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration percentage	10.00%	10.00%	10.00%
Maximum [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of the assets	7 years

Concentration risk number of customers responsible for concentration.

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Concentration Risk Number Of Service Providers Responsible For Concentration

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- Definition

Experience in operation period.

+ References

No definition available.

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- Definition

Number of financial institutions in which securities (cash, government securities, mutual funds and money market funds) are held.

+ References

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- Definition

An element designated to encapsulate any additional information related to cash and cash equivalents not otherwise addressed by the existing taxonomy. Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

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-Name Accounting Standards Codification

-Glossary Cash Equivalents

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 720

-SubTopic 35

-Section 50

-Paragraph 1

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- Definition

The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

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-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

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-Topic 275

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-Paragraph 18

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(1))

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.BB)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Article 5

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section BB

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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-Publisher FASB

-Name Accounting Standards Codification

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-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(4))

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

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- Definition

Research and development expense during the period related to the costs of developing and achieving technological feasibility of a computer software product to be sold, leased, or otherwise marketed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Name Accounting Standards Codification

-Glossary Research and Development

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Preliminary Project Stage

-URI http://asc.fasb.org/extlink&oid=6521637

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- Definition

The aggregate selling price reductions recognized during an accounting period including, but not limited to, the sale of defective or nonconforming goods, a strategy to increase sales (generally over the short-term), move slow-moving items, develop distribution channels, or reward valuable customers. Allowances are a deduction from gross revenue in arriving at net revenue.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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