Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Presentation of fair value of financial assets using the inputs
Total financial assets	$ 1,454	$ 1,433
(Level 1)
Presentation of fair value of financial assets using the inputs
Total financial assets	745	725
(Level 2)
Presentation of fair value of financial assets using the inputs
Total financial assets	709	708
(Level 3)
Presentation of fair value of financial assets using the inputs
Total financial assets	0	0
Cash
Presentation of fair value of financial assets using the inputs
Total financial assets	28,807	35,128
Cash | (Level 1)
Presentation of fair value of financial assets using the inputs
Total financial assets	28,807	35,128
Cash | (Level 2)
Presentation of fair value of financial assets using the inputs
Total financial assets	0	0
Cash | (Level 3)
Presentation of fair value of financial assets using the inputs
Total financial assets	0	0
Total cash
Presentation of fair value of financial assets using the inputs
Total financial assets	28,807	35,128
Total cash | (Level 1)
Presentation of fair value of financial assets using the inputs
Total financial assets	28,807	35,128
Total cash | (Level 2)
Presentation of fair value of financial assets using the inputs
Total financial assets	0	0
Total cash | (Level 3)
Presentation of fair value of financial assets using the inputs
Total financial assets	0	0
Certificates of deposit
Presentation of fair value of financial assets using the inputs
Total financial assets	709	708
Certificates of deposit | (Level 1)
Presentation of fair value of financial assets using the inputs
Total financial assets	0	0
Certificates of deposit | (Level 2)
Presentation of fair value of financial assets using the inputs
Total financial assets	709	708
Certificates of deposit | (Level 3)
Presentation of fair value of financial assets using the inputs
Total financial assets	0	0
Merchant bank deposit
Presentation of fair value of financial assets using the inputs
Total financial assets	745	725
Merchant bank deposit | (Level 1)
Presentation of fair value of financial assets using the inputs
Total financial assets	745	725
Merchant bank deposit | (Level 2)
Presentation of fair value of financial assets using the inputs
Total financial assets	0	0
Merchant bank deposit | (Level 3)
Presentation of fair value of financial assets using the inputs
Total financial assets	$ 0	$ 0