Financial Instruments - Level 2 and 3 (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Schedule of Changes in Fair Value of Financial Assets (Liabilities) Classified as Level 3
Level 2 and level 3 fair value transactions	$ 0	$ 0	$ 0	$ 0