ACQUISITIONS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 03, 2012 TRX	Dec. 31, 2013 TRX Customer relationships	Jan. 03, 2012 TRX Customer relationships
Acquisitions
Cash paid for acquisition	$ 0	$ 10,294	$ 0	$ 10,294
Allocation of the purchase price
Current assets				2,702
Property, plant and equipment				2,227
Intangible assets				5,365		5,365
Deferred tax assets				40
Total assets acquired				10,334
Current liabilities				40
Total liabilities assumed				40
Net assets acquired				10,294
Amortization period					6 years
Proceeds from debt issuance				10,000
Pro Forma Statements of Operations
Net sales			216,014
Income from operations			20,022
Net income attributable to DMC			$ 13,549
Net income per share:
Basic (in dollars per share)			$ 1.01
Diluted (in dollars per share)			$ 1.01