Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 13	$ 0	$ 0
Cash paid for income taxes	38	285	188
Non-cash investing and financing activities:
Assets acquired under capital leases	0	(382)	0
Accounts payable and accrued liabilities related to property, plant and equipment purchases	$ 843	$ 106	$ 14