Fair Value Measurements (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015		Jun. 30, 2014
Fair Value Disclosures [Abstract]
Unrealized (loss) gain on available for sale marketable securities, net of taxes	$ (20,000)	$ 6,000	$ (17,000)	[1]	$ 7,000
Proceeds from available for sale municipal bonds	1,788,000	1,004,000	2,546,000		1,875,000
Realized gain on other income, investment and interest	$ 0	$ 3,000	$ 3,000		$ 4,000

[1] All amounts are net of tax.