Long-Term Debt (Schedule of Interest Expense Related to Convertible Notes) (Details) (Convertible senior notes due December 2020 [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Convertible senior notes due December 2020 [Member]
Cash interest per contractual coupon rate	$ 288
Amortization of note discount	848
Amortization of deferred financing costs	48
Total interest expense related to Convertible Notes	$ 1,184