Prepaid Expenses and Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Prepaid Expenses and Other Assets
Prepaid insurance	$ 302	$ 542
Prepaid contractor fees and vendor advances	12	100
Taxes receivable		90
Recoupable deposits and other	137	103
Prepaid expenses and other assets	$ 451	$ 835