(Long-Lived Assets by Geographic Area) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Schedule of long-lived assets by geographical area
Total long-lived assets	$ 12,726	$ 18,312
UNITED STATES [Member]
Schedule of long-lived assets by geographical area
Total long-lived assets	12,726	16,189
Europe [Member]
Schedule of long-lived assets by geographical area
Total long-lived assets	$ 0	$ 2,123