Business Segment and Geographic Area Information - Reconciliation of Reportable Segment Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Segment Reporting [Abstract]
Total Assets for Reportable Segments	$ 27,390	$ 27,104
Other Unallocated Amounts	1,066	2,291
Consolidated Total	$ 28,456	$ 29,395