Fair Value (Narrative) (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Fair Value [Abstract]
Long-term investments	$ 11,300,000
Maturity term	10 years
Unrealized losses still held	1,587,000	1,575,000
Fair value of auction rate securities	$ 9,700,000