Schedule II Valuation and Qualifying Accounts:

12 Months Ended

Dec. 31, 2011

Valuation and Qualifying Accounts [Abstract]

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

Schedule II – Valuation and Qualifying Accounts:

The following is a summary of the allowance for doubtful accounts related to accounts receivable for the years ended December 31:

	2011		2010
Balance at beginning of year	$	59,000	$	57,000
Charged to expenses		21,000		8,000
Uncollectible accounts written off		(10,000)		(6,000)
Balance at end of year	$	70,000	$	59,000

The following is a summary of the allowance for excess inventory for the years ended December 31:

	2011		2010
Balance at beginning of year	$	376,000	$	342,000
Charged to expenses		8,000		42,000
Obsolete inventory written off				(8,000)
Balance at end of year	$	384,000	$	376,000

The following is a summary of property and equipment and the related accounts of accumulated depreciation for the years ended December 31:

	2011		2010
Cost Basis
Balance at beginning of year	$	33,539,000	$	32,088,000
Additions		1,377,000		2,061,000
Disposals		-		-
Balance at end of year	$	34,916,000	$	34,149,000
Accumulated depreciation
Balance at beginning of year	$	24,486,000	$	22,555,000
Depreciation		1,586,000		1,935,000
Disposals		-		-
Balance at end of year	$	26,072,000	$	24,490,000