Marketable Securities

9 Months Ended

Sep. 30, 2015

Marketable Securities [Abstract]

Marketable Securities

Marketable Securities

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

(in thousands)	September 30, 2015		December 31, 2014		September 30, 2014
U.S. Government and agency obligations	$	7,625	$	10,511	$	12,967
Commercial paper	9,982		14,993		14,983
Total short-term marketable securities	17,607		25,504		27,950
U.S. Government and agency obligations	70,646		76,563		74,140
Total long-term marketable securities	70,646		76,563		74,140
Total marketable securities	$	88,253	$	102,067	$	102,090

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

(in thousands)	September 30, 2015
Due within one year	$	17,607
Due in one to five years	70,646
Total	$	88,253