Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 item	Jun. 30, 2017 USD ($)
Property, Plant and Equipment [Line Items]
Number of operating leases	480
Number of finance leases	115
Number of stock option compensation plans	3
Mascus International Holdings BV [Member] | ASU 2016-15 [Member]
Property, Plant and Equipment [Line Items]
Reclassification of contingent consideration | $		$ 1,302