Acquisitions (Triad Holdings, Inc.) (Details) - USD ($) $ in Thousands		3 Months Ended
	Feb. 27, 2017	Jun. 30, 2017
Business Acquisition [Line Items]
Business acquisitions holdback liability	$ 1,400	$ 1,068
Triad Holdings, Inc.
Business Acquisition [Line Items]
Purchase price to acquire common stock	9,600
Cash acquired in acquisition	$ 269
Payments to acquire businesses modified by measurement period adjustments		$ 9,200
Purchase agreement, portion of purchase price held, period from acquisition date (in months)	18 months