SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Allowance for doubtful accounts rollforward

The following is a summary of activity for the allowance for doubtful accounts during the years ended December 31, 2012, 2011 and 2010:

	Dollars in Thousands
	Beginning Balance		Provision		Write Offs			Ending Balance
Year ended December 31, 2012	$	1,088	$	2,468	$	(1,385	)	$	2,171
Year ended December 31, 2011	$	334	$	1,738	$	(984	)	$	1,088
Year ended December 31, 2010	$	310	$	28	$	(4	)	$	334

Allowance for obsolete inventory rollforward

The following is a summary of activity for the allowance for obsolete inventory during the year ended December 31, 2012, 2011 and 2010:

	Dollars in Thousands
	Beginning Balance		Provision		Write Offs			Ending Balance
Year ended December 31, 2012	$	511	$	129	$	(24	)	$	616
Year ended December 31, 2011	$	518	$	48	$	(55	)	$	511
Year ended December 31, 2010	$	507	$	100	$	(89	)	$	518

Schedule of property and equipment, useful lives

Depreciation is computed by 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