Equity - Summary Information Regarding To DSIT Stock Option Plan Outstanding and Exercisable (Details) (USD $)	12 Months Ended
Dec. 31, 2014
Number of Shares Outstanding	1,812,428
Number of Shares Exercisable	1,128,434
DSIT Stock Option Plan [Member]
Number of Shares Outstanding	239,424
Weighted Average Exercise Price	$ 1.67
Number of Shares Exercisable	101,904
Weighted Average Exercise Price	$ 1.45
Range Of Exercise Prices One [Member]
Range of Exercise Price Lower Limit	$ 0.97
Range of Exercise Price Upper limit	$ 2.56
Number of Shares Outstanding	560,615
Weighted Average Remaining Contractual Life (in years)	6 years 3 months 18 days
Weighted Average Exercise Price	$ 1.64
Number of Shares Exercisable	65,500
Weighted Average Exercise Price	$ 2.35
Range Of Exercise Prices One [Member] \| DSIT Stock Option Plan [Member]
Range of Exercise Price Lower Limit	$ 1.05
Range of Exercise Price Upper limit	$ 1.26
Number of Shares Outstanding	147,770
Weighted Average Remaining Contractual Life (in years)	3 years 7 months 6 days
Weighted Average Exercise Price	$ 1.18
Number of Shares Exercisable	81,068
Weighted Average Exercise Price	$ 1.20
Range Of Exercise Prices Two [Member]
Range of Exercise Price Lower Limit	$ 3.51
Range of Exercise Price Upper limit	$ 5.00
Number of Shares Outstanding	426,264
Weighted Average Remaining Contractual Life (in years)	4 years 6 months
Weighted Average Exercise Price	$ 4.19
Number of Shares Exercisable	336,388
Weighted Average Exercise Price	$ 4.24
Range Of Exercise Prices Two [Member] \| DSIT Stock Option Plan [Member]
Range of Exercise Price Upper limit	$ 2.41
Number of Shares Outstanding	91,654
Weighted Average Remaining Contractual Life (in years)	3 years 7 months 6 days
Weighted Average Exercise Price	$ 2.41
Number of Shares Exercisable	20,836
Weighted Average Exercise Price	$ 2.41

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

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

-Publisher FASB

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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

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