Related Party Transactions (Summary of Related Party Transactions) (Details) - Affiliated Entity - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Related Party Transaction [Line Items]
Tax, utility, insurance and other reimbursement	$ 118	$ 155	$ 467	$ 527
Rent expense	254	254	762	761
Capital assets acquired	32	24	384	191
Total	$ 404	$ 433	$ 1,613	$ 1,479