Business Segment and Geographic Area Information - Reconciliation of Reportable Segment Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Segment Reporting [Abstract]
Total Assets for Reportable Segments	$ 32,129	$ 27,104
Other Unallocated Amounts	1,712	2,291
Consolidated Total	$ 33,841	$ 29,395