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SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Income Taxes    
Income tax rate, low end 20.00%boom_EffectiveIncomeTaxRateReconciliationForeignStatutoryIncomeTaxRateLowEndOfRange  
Income tax rate, high end 35.00%boom_EffectiveIncomeTaxRateReconciliationForeignStatutoryIncomeTaxRateHighEndOfRange  
Numerator:    
Income (loss) from continuing operations $ (2,377)us-gaap_IncomeLossFromContinuingOperations $ 1,803us-gaap_IncomeLossFromContinuingOperations
Less income allocated to RSAs 0us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic (30)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
Income (loss) from continuing operations allocated to common stock for EPS calculation (2,377)boom_IncomeLossfromContinuingOperationsAttributabletoParentafterAllocationtoParticipatingSecuritiesBasic 1,773boom_IncomeLossfromContinuingOperationsAttributabletoParentafterAllocationtoParticipatingSecuritiesBasic
Loss from discontinued operations 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity (316)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Net income (loss) allocated to common stock for EPS calculation $ (2,377)boom_NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesBasic $ 1,457boom_NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesBasic
Denominator:    
Weighted average common shares outstanding - basic (in shares) 13,822,231us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 13,644,239us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Dilutive stock-based compensation plans (in shares) 0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 5,714us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Weighted average common shares outstanding - diluted (in shares) 13,822,231us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 13,649,953us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Income (loss) per share - Basic:    
Continuing operations (in dollars per share) $ (0.17)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare $ 0.13us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Discontinued operations (in dollars per share) $ 0.00us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare $ (0.02)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
Net income (in dollars per share) $ (0.17)us-gaap_EarningsPerShareBasic $ 0.11us-gaap_EarningsPerShareBasic
Income (loss) per share - Diluted:    
Continuing operations (in dollars per share) $ (0.17)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ 0.13us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Discontinued operations (in dollars per share) $ 0.00us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare $ (0.02)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
Net income (in dollars per share) $ (0.17)us-gaap_EarningsPerShareDiluted $ 0.11us-gaap_EarningsPerShareDiluted