Marketable Securities

3 Months Ended

Mar. 31, 2016

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)	March 31, 2016		December 31, 2015		March 31, 2015
U.S. Government and agency obligations	$	23,024	$	15,051	$	9,290
Commercial paper	19,977		9,992		9,992
Total short-term marketable securities	43,001		25,043		19,282
U.S. Government and agency obligations	72,653		80,652		80,522
Total long-term marketable securities	72,653		80,652		80,522
Total marketable securities	$	115,654	$	105,695	$	99,804

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

(in thousands)	March 31, 2016
Due within one year	$	43,001
Due in one to five years	72,653
Total	$	115,654