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EQUITY (Details 3) (USD $) | 12 Months Ended
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Dec. 31, 2014
Stock Option One [Member] |
Option Indexed to Issuers Equity [Line Items] |
Outstanding options, Average Exercise price (in dollars per share) | $ 1.45 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionOneMember
Outstanding options, Number (in shares) | 183,000 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionOneMember
Outstanding options, Average remaining contractual life | 2 years
Exercisable options, Average Exercise price (in dollars per share) | $ 1.45 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionOneMember
Exercisable options, Number (in shares) | 61,000 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionOneMember
Exercisable options, Average remaining contractual life | 2 years
Stock Option Two [Member] |
Option Indexed to Issuers Equity [Line Items] |
Outstanding options, Average Exercise price (in dollars per share) | $ 2.3 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionTwoMember
Outstanding options, Number (in shares) | 94,000 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionTwoMember
Outstanding options, Average remaining contractual life | 3 years 9 months 7 days
Exercisable options, Average Exercise price (in dollars per share) | $ 2.3 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionTwoMember
Exercisable options, Number (in shares) | 18,800 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionTwoMember
Exercisable options, Average remaining contractual life | 3 years 9 months 7 days
Stock Option Three [Member] |
Option Indexed to Issuers Equity [Line Items] |
Outstanding options, Average Exercise price (in dollars per share) | $ 5.31 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionThreeMember
Outstanding options, Number (in shares) | 131,000 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionThreeMember
Outstanding options, Average remaining contractual life | 4 years 7 months 20 days
Exercisable options, Average Exercise price (in dollars per share) | $ 5.31 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionThreeMember
Exercisable options, Number (in shares) | 0 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_OptionIndexedToIssuersEquityTypeAxis = dhrm_StockOptionThreeMember
Exercisable options, Average remaining contractual life | 4 years 7 months 20 days

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- Definition 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 -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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