Acquisitions (Details Textual) - Stagecoach - USD ($) $ in Millions		3 Months Ended
	Jul. 28, 2015	Mar. 31, 2016
Business Acquisition [Line Items]
Date of acquisition		Jul. 28, 2015
Consideration Transferred	$ 32.3
Contingent Consideration Arrangements, Range of Outcomes, Value, High		$ 5.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contingent Liability	$ 4.1
2016
Business Acquisition [Line Items]
Contingent Consideration Arrangements, Basis		7.0
2017
Business Acquisition [Line Items]
Contingent Consideration Arrangements, Basis		7.0
2018
Business Acquisition [Line Items]
Contingent Consideration Arrangements, Basis		7.0
2019
Business Acquisition [Line Items]
Contingent Consideration Arrangements, Basis		$ 7.0