Commitments and Contingencies Line of Credit (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) letter_of_credit	Dec. 31, 2014 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Line of Credit Maintained	$ 1,000	$ 5,000
Collateral required - old line of credit		6,300
Number of Letter of Credit | letter_of_credit	1
Letters of Credit Outstanding, Amount	$ 113
Restricted Investments, Current	$ 1,401	$ 1,401