Adjustment to deferred acquisition consideration included in interest expense

No definition available.

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- Definition

Aggregate Non-Vested, Shares, Restricted Stock Grant, Gross

+ References

No definition available.

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- Definition

The change in the estimated value of contingent purchase price obligations that are remeasured and adjusted through operating profit.

+ References

No definition available.

+ Details

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- Definition

The percentage of accounts receivable that the largest client did not exceed during the period.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The percentage of revenue over the consolidated revenue that the largest client did not exceed during the period.

+ References

No definition available.

+ Details

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- Definition

Percentage of interest rate payable on senior notes.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

This represents the rate of undivided interest for the reporting period.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Put option noncontrolling interest impairment charge

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Restricted stock grant date, fair value

+ References

No definition available.

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Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.18)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7

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Balance Type:	debit
Period Type:	instant

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

+ Details

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Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=29638308&loc=d3e40346-111594

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Period Type:	duration

- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 5A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=52262685&loc=SL6759159-111685

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- Details

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- Details

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- Details

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Significant Accounting Policies (Details Textual) - USD ($)		3 Months Ended			6 Months Ended
	Mar. 28, 2012	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Significant Accounting Policies [Line Items]
Interest Rate Percentage On Senior Notes		6.75%			6.75%
Put option noncontrolling interest impairment charge				$ 0	$ 0	$ 0
Cost Method Investments		$ 11,865,000			$ 11,865,000		$ 10,196,000
Consolidated Accounts Receivable Percentage		10.00%			10.00%		10.00%
Consolidated Largest Client Revenue		10.00%		10.00%	10.00%	10.00%
Business Acquisition, Increase (Decrease) in Contingent Purchase Price Obligation		$ (12,741,000)		$ 4,071,000	$ (10,493,000)	$ 12,093,000
Business Combination, Acquisition Related Costs		842,000		984,000	1,716,000	2,055,000
Assets		1,848,647,000		1,685,018,000	1,848,647,000	1,685,018,000	$ 1,648,890,000
Liabilities		2,122,430,000			$ 2,122,430,000		1,802,519,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross					71,155
Restricted stock grant date fair value					$ 1,571
Adjustment to deferred acquisition consideration included in interest expense		$ 377		$ 493	$ 930	$ 862
Common Class A
Significant Accounting Policies [Line Items]
Aggregate Non-Vested, Shares, Restricted Stock Issued, Gross		717,717			717,717
Doner [Member]
Significant Accounting Policies [Line Items]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	30.00%
Assets		$ 148,205,000			$ 148,205,000		223,305,000
Liabilities		$ 112,971,000			$ 112,971,000		$ 192,340,000
Aggregate 2012 Acquisitions [Member] \| Doner [Member]
Significant Accounting Policies [Line Items]
Ownership Interest Percentage Increase On Exercise Of Option	70.00%
Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life			3 years
Equity Method Investment, Ownership Percentage		50.00%			50.00%
Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life			7 years
Equity Method Investment, Ownership Percentage		50.00%			50.00%
Real Estate Joint Venture [Member]
Significant Accounting Policies [Line Items]
Percentage Of Undivided Interest		30.00%			30.00%