Income Taxes (Schedule of Noncurrent Deferred Taxes and Other Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Deferred income taxes	$ 11,188	$ 12,589
Other liabilities	1,201	1,565
Total noncurrent deferred taxes and other liabilities	$ 12,389	$ 14,154