Investments (Tables)

6 Months Ended

Jun. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Investments

The Company’s investments, excluding cash surrender value of insurance contracts of $72,660 and $72,214 as of June 30, 2014 and December 31, 2013, respectively, consisted of the following:

	Cost Basis		Unrealized (Loss) Gain			Fair Value
As of June 30, 2014
Short-term investments:
Certificates of deposit	$	144,273	$	—		$	144,273
U.S. dollar indexed bond funds	8,963		(266		)	8,697
	$	153,236	$	(266	)	$	152,970
Long-term investments:
Assets held in a rabbi trust	$	9,285	$	730		$	10,015
As of December 31, 2013
Short-term investments:
Certificates of deposit	$	215,010	$	—		$	215,010
U.S. dollar indexed bond funds	25,263		2,715			27,978
	$	240,273	$	2,715		$	242,988
Long-term investments:
Assets held in a rabbi trust	$	10,085	$	292		$	10,377