Marketable Securities

6 Months Ended

Jun. 30, 2014

Marketable Securities [Abstract]

Marketable Securities

4. 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)	June 30, 2014		December 31, 2013		June 30, 2013
U.S. Government and agency obligations	$	7,906	$	10,000	$	613
Commercial paper	19,992		39,968		14,992
Municipal bonds	—		—		5,666
Total short-term marketable securities	27,898		49,968		21,271
U.S. Government and agency obligations	84,234		67,234		55,225
Total long-term marketable securities	84,234		67,234		55,225
Total marketable securities	$	112,132	$	117,202	$	76,496

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

(in thousands)	June 30, 2014
Due within one year	$	27,898
Due in one to five years	84,234
Total	$	112,132