SUBSEQUENT EVENT (Details) (Subsequent event, Scenario forecast, Restricted stock awards, USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	5 Months Ended
Mar. 31, 2013	Dec. 31, 2012	Feb. 28, 2013
Subsequent event \| Scenario forecast \| Restricted stock awards
Subsequent Event
Awards expected to vest (in shares)			33,666
Accelerated recognition of stock-based compensation expense	$ 254	$ 364	$ 618

The number of equity-based payment instruments, excluding stock (or unit) options, whose vesting will be accelerated.

No definition available.

Name:	boom_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOutstandingNumber
Namespace Prefix:	boom_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration