SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

3 Months Ended

Mar. 31, 2014

Accounting Policies [Abstract]

Allowance for doubtful accounts rollforward

The following is a summary of activity for the allowance for doubtful accounts during the three months ended March 31, 2014 and 2013:

	Dollars in Thousands
	Beginning Balance		Provision		Write-Offs			Ending Balance
Three Months Ended March 31, 2014	$	3,838	$	673	$	(971	)	$	3,540
Three Months Ended March 31, 2013	$	2,171	$	1,581	$	(1,203	)	$	2,549

Allowance for obsolete inventory rollforward

The following is a summary of activity for the allowance for obsolete inventory during the three months ended March 31, 2014 and 2013:

	Dollars in Thousands
	Beginning Balance		Provision		Write-Offs			Ending Balance
Three Months Ended March 31, 2014	$	799	$	55	$	(5	)	$	849
Three Months Ended March 31, 2013	$	616	$	—	$	(5	)	$	611

Schedule of property and equipment, useful lives

Depreciation is computed using the straight-line method over the estimated useful lives of the related assets as follows:

Leasehold improvements	1 to 10 years
Furniture and fixtures	3 to 7 years
Production equipment	3 to 7 years
Computer equipment	3 to 7 years
Research and development equipment	2 to 7 years