Financial Instruments and Investments Financial Instruments and Investments (Reconciliation) (Details) (Debt Securities, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Debt Securities
Fair Value in Investment in Debt Securities [Roll Forward]
Balance at January 1	$ 1,295		$ 1,120
Net unrealized gains (losses) in fair value recognized in income on debt securities still held	260	[1]	175	[1]
Balance at December 31	$ 1,555		$ 1,295

[1] These amounts are reflected in the Company's statement of operations as investment and interest income.