SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Taxes
Foreign tax rate, low end of range (as a percent)	20.00%
Foreign tax rate, high end of range (as a percent)	35.00%
Financial statement benefit from change in federal tax laws	$ 900
Basic earnings per share:
Net income attributable to DMC	215	2,428
Less income allocated to RSAs	(2)	(53)
Net income allocated to common stock for EPS calculation	213	2,375
Shares, basic	13,509,792	13,183,000
EPS, basic (in dollars per share)	$ 0.02	$ 0.18
Adjust shares for dilutives: Stock-based compensation plans	4,005	7,193
Diluted earnings per share:
Net income attributable to DMC	215	2,428
Less income allocated to RSAs	(2)	(53)
Net income allocated to common stock for EPS calculation	$ 213	$ 2,375
Shares, diluted	13,513,797	13,190,193
EPS, diluted (in dollars per share)	$ 0.02	$ 0.18