Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities (Narrative) (Details)

v2.4.1.9
Marketable Securities (Narrative) (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Minimum    
Available-for-sale maturity period 3 months 3 months
Maximum    
Available-for-sale maturity period 12 months 12 months