BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Activity in the allowance for doubtful accounts
Beginning balance	$ 177	$ 284
Allowance for doubtful accounts acquired	460
Additional reserves	164	(25)
Write-offs	1	(82)
Ending balance	802	177
Inventories
Parts and raw materials	20,649	13,174
Work-in-process	3,369	1,504
Finished goods	4,350	2,096
Inventory, gross	28,368	16,774
Less reserves	(3,938)	(2,073)
Inventories, net	24,430	14,701
Provision for excess and obsolete inventory	$ 105	$ 265