Costs and Estimated Earnings on Uncompleted Contracts - Costs and Estimated Earnings on Uncompleted Contracts in the Accompanying Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Costs in Excess of Billings on Uncompleted Contracts or Programs [Abstract]
Costs in Excess of Billings	$ 2	$ 42
Billing in Excess of Costs and Estimated Earnings on Uncompleted Contracts	(79)	(51)
Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts	$ (77)	$ (9)