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Significant Accounting Policies (Details Textual) - USD ($)				3 Months Ended			6 Months Ended		12 Months Ended
	May 01, 2024	May 03, 2016	Oct. 23, 2014	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Significant Accounting Policies [Line Items]
Option to purchase noncontrolling interest impairment charge					$ 0
Net cash provided by (used in) operating activities							$ (61,713,000)	$ (726,000)
Payment for contingent consideration								65,121,000
Impairment of long-lived asset				$ 0		$ 0	2,317,000	0
Goodwill				857,140,000			857,140,000		$ 835,935,000
Acquisition related costs				335,000		242,000	711,000	476,000
Assets				1,788,597,000			1,788,597,000		1,698,892,000
Liabilities				1,886,203,000			1,886,203,000		1,791,519,000
Adjustment to deferred acquisition consideration included in interest expense				14,000		25,000	26,000	54,000
Provisional tax expense									$ (26,674,000)
Wells Fargo Capital Finance, LLC
Significant Accounting Policies [Line Items]
Debt instrument, maturity date		May 03, 2021	Sep. 30, 2019
Maximum borrowing capacity			$ 325,000,000
Contingent Payment
Significant Accounting Policies [Line Items]
Change in contingent purchase price obligation				$ (5,065,000)		$ 4,306,000	$ (2,480,000)	15,737,000
6.50% Notes due 2024
Significant Accounting Policies [Line Items]
Interest rate, stated percentage					6.50%
Forecast | 6.50% Notes due 2024 | Wells Fargo Capital Finance, LLC
Significant Accounting Policies [Line Items]
Debt instrument, maturity date	May 01, 2024
Preferred Stock | Series 4 Convertible Preferred Stock
Significant Accounting Policies [Line Items]
Shares outstanding (shares)				95,000			95,000		95,000
Accounting Standards Update 2016-15
Significant Accounting Policies [Line Items]
Net cash provided by (used in) operating activities								$ (24,459,000)
Canada
Significant Accounting Policies [Line Items]
Effective tax rate (percent)							24.70%

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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