Commitments and Contingencies Line of Credit (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($) letter_of_credit	Dec. 31, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Line of Credit Maintained	$ 1,000
Number of Letter of Credit | letter_of_credit	1
Letters of Credit Outstanding, Amount	$ 113
Restricted Investments, Current	$ 1,401	$ 1,401