Goodwill and Other Intangible Assets - Summary of Reconciliation of Goodwill (Details 3) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill
Beginning balance	$ 32,047,000us-gaap_Goodwill	$ 32,547,000us-gaap_Goodwill
Impairment charge	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
Ending balance	32,047,000us-gaap_Goodwill	32,047,000us-gaap_Goodwill	32,547,000us-gaap_Goodwill
Electronics Manufacturing Solutions [Member]
Goodwill
2013 reduction - sale of EMS business		$ (500,000)

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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