Significant Accounting Policies, Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Goodwill [Abstract]
Non-cash impairment charge	$ 14,240	$ 0	$ 14,240	$ 0
Tax benefit associated with goodwill impairment charge	$ (1,300)