Marketable Securities

3 Months Ended

Mar. 31, 2015

Marketable Securities [Abstract]

Marketable Securities

Marketable Securities

All marketable securities were classified as held-to-maturity for the dates presented and the carrying amounts of held-to-maturity securities were as follows:

(in thousands)	March 31, 2015		December 31, 2014		March 31, 2014
U.S. Government and agency obligations	$	9,290	$	10,511	$	6,157
Commercial paper	9,992		14,993		34,986
Total short-term marketable securities	19,282		25,504		41,143
U.S. Government and agency obligations	80,522		76,563		65,969
Total long-term marketable securities	80,522		76,563		65,969
Total marketable securities	$	99,804	$	102,067	$	107,112

Scheduled maturities of held-to-maturity investments were as follows:

(in thousands)	March 31, 2015
Due within one year	$	19,282
Due in one to five years	80,522
Total	$	99,804