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Summary Of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]  
Summary Of The Amortized Costs And Fair Values Of Marketable Securities

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(In thousands)

 

MARKETABLE SECURITIES

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized Cost

 

Fair Value

 

Gross Unrealized Gains

 

Gross Unrealized Losses

December 31, 2014

 

 

 

 

 

 

 

 

 

 

 

Tax-exempt Municipal Bonds

$
8,809 

 

$
8,804 

 

$
5 

 

$
10 

Variable Rate Demand Notes

 
13,600 

 

 
13,600 

 

 

 -

 

 

 -

Total Marketable Securities

$
22,409 

 

$
22,404 

 

$
5 

 

$
10 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2013

 

 

 

 

 

 

 

 

 

 

 

Tax-exempt Municipal Bonds

$
20,813 

 

$
20,825 

 

$
18 

 

$
6 

Variable Rate Demand Notes

 
15,579 

 

 
15,579 

 

 

 -

 

 

 -

Total Marketable Securities

$
36,392 

 

$
36,404 

 

$
18 

 

$
6 

 

Schedule Of Estimated Future Amortization Expense

 

 

 

 

 

 

 

 

Years ending December 31:

 

(In thousands)

2015

 

$
5,330 

2016

 

 
5,314 

 

Schedule Of Changes In Product Warranty

 

 

 

 

 

 

 

 

 

 

 

 

 

(In thousands)

 

Year Ended December 31

 

2014

 

2013

Beginning balance January 1

$

568

 

$

388

Accruals during the period

 

296

 

 

840

Charges / payments made under the warranties

 

(487)

 

 

(660)

Balance December 31

$

377

 

$

568