Significant Accounting Policies Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended					9 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2016
Accounting Policies [Abstract]
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent	6.20%					2.20%
Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Amount	$ 4,755		$ 8,479
Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Percent	5.20%					1.80%
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount	$ 2,865
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent	3.10%					1.10%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	$ 4,055		8,361
Current Income Tax Expense (Benefit)		$ 2,200	7,216	$ (7,026)
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent						0.80%
Effective Income Tax Rate Reconciliation, Deduction, Other, Amount			55,842
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 371,000
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent						1.50%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount					$ (17,527)