Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Summary Of Significant Accounting Policies [Abstract]

Schedule Of Warranty

	Year Ended December 31
		2015		2014
Beginning balance	$	434,000	$	564,000
Amounts charged to expense		231,000		(14,000)
Actual warranty costs paid		(111,000)		(116,000)
Ending balance	$	554,000	$	434,000

Components Of Accumulated Other Comprehensive Loss

	December 31
		2015		2014
Minimum pension liability	$	4,148,000	$	1,951,000
Unrealized loss on available-for-sale investments		(13,000)		(41,000)
Foreign currency translation		(4,801,000)		(2,605,000)
	$	(666,000)	$	(695,000)