Acquisitions (Acquisition of Choose Digital) (Details) - Choose Digital Inc. - USD ($) $ in Thousands									3 Months Ended	12 Months Ended
	May 18, 2016	Dec. 31, 2015	Nov. 30, 2015	Oct. 31, 2015	Sep. 30, 2015	Aug. 31, 2015	Jul. 31, 2015	Jun. 24, 2015	Sep. 30, 2016	Jun. 30, 2015	May 12, 2016	Jan. 29, 2016	Jun. 24, 2014
Business Acquisition [Line Items]
Period for average closing price								5 days
Contingent consideration liability								$ 4,792					$ 2,570
Increase in contingent consideration liability										$ 2,222
Other payments to acquire businesses	$ 300	$ 517	$ 521	$ 524	$ 528	$ 532	$ 668		$ 400
Contingent consideration including interest											$ 1,754	$ 1,754
Contingent consideration, interest								170
Contingent consideration, legal fees								$ 82
Other payments, monthly installment									$ 100
Other payments, monthly installment, interest rate									9.00%
Contingent consideration, shares pledged as collateral											100,000