Business and summary of significant accounting policies Business and summary of significant accounting policies - Revenue recognition (Details)

v3.7.0.1

Business and summary of significant accounting policies Business and summary of significant accounting policies - Revenue recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Management and employee meals	$ 308	$ 273