Cash, Cash Equivalents, and Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash and Cash Equivalents [Line Items]
Cash and Cash Equivalents	$ 17,788	$ 8,969	$ 14,492
Marketable Securities	3,503	3,597
Total	21,291	12,566
United States (including Mexico) [Member]
Cash and Cash Equivalents [Line Items]
Cash and Cash Equivalents	12,861	3,160
Marketable Securities	0	0
Total	12,861	3,160
France [Member]
Cash and Cash Equivalents [Line Items]
Cash and Cash Equivalents	887	644
Marketable Securities	3,503	3,597
Total	4,390	4,241
Macau S.A.R., China [Member]
Cash and Cash Equivalents [Line Items]
Cash and Cash Equivalents	4,040	5,165
Marketable Securities	0	0
Total	$ 4,040	$ 5,165