BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Activity in the allowance for doubtful accounts
Beginning balance	$ 802	$ 177
Allowance for doubtful accounts acquired		460
Additional reserves	473	158
Write-offs	(882)	1
Effect of foreign currency translation	(26)	6
Ending balance	367	802
Inventories
Parts and raw materials	21,573	20,649
Work-in-process	2,924	3,369
Finished goods	4,403	4,350
Inventory, gross	28,900	28,368
Less reserves	(3,529)	(3,938)
Inventories, net	25,371	24,430
Provision for excess and obsolete inventory	$ 753	$ 105