ACQUISITIONS (Details)	Nov. 18, 2013	Dec. 20, 2013	Apr. 10, 2014	Jun. 12, 2014	Dec. 23, 2014
M 2 K Laser GmbH
Business Acquisition [Line Items]
Additional investment in subsidiary, percentage acquired	10.00%
Equity investment	100.00%
Rofin-Baasel Japan Corp.
Business Acquisition [Line Items]
Additional investment in subsidiary, percentage acquired		12.00%
Equity investment		100.00%
Filaser
Business Acquisition [Line Items]
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed, Yet To Be Paid			28.00%
DILAS Diodenlaser
Business Acquisition [Line Items]
Additional investment in subsidiary, percentage acquired				5.00%
Equity investment				100.00%
Nanjing Easter Laser Company Ltd
Business Acquisition [Line Items]
Additional investment in subsidiary, percentage acquired					8.80%
Equity investment					88.80%