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Significant Accounting Policies (Details Textual) |  |  |  |  |  | 3 Months Ended | 12 Months Ended |  |  |
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May 01, 2024 | May 03, 2016 | Mar. 23, 2016 | Oct. 23, 2014 USD ($) | Mar. 28, 2012 | Mar. 31, 2017 USD ($) Clients shares | Mar. 31, 2016 USD ($) Clients | Dec. 31, 2016 USD ($) Clients | Jan. 31, 2017 $ / shares shares | Dec. 31, 2015 USD ($) | Mar. 20, 2013
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Book Overdrafts |  |  |  |  |  |  | $ 6,271,000 |  |  |  |
Stock Issued During Period, Shares, Convertible Preferred Shares | shares |  |  |  |  |  | 90,220,000 |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Fair Value |  |  |  |  |  | $ 60,383,000 |  | $ 60,180,000 |  |  |
Noncontrolling Interest, Increase from Business Combination |  |  |  |  |  | 63,000 |  |  |  |  |
Debt Issuance Costs, Net |  |  |  |  |  | $ (18,039,000) |  | $ (18,420,000) |  |  |
Clients exceeding consolidated accounts receivable percentage | Clients |  |  |  |  |  | 0 |  | 0 |  |  |
Interest Rate Percentage On Senior Notes |  |  |  |  |  | 6.75% |  |  |  |  |
Put option noncontrolling interest impairment charge |  |  |  |  |  | $ 0 | $ 0 |  |  |  |
Cost Method Investments |  |  |  |  |  | $ 10,306,000 |  | $ 10,132,000 |  |  |
Consolidated Accounts Receivable Percentage |  |  |  |  |  | 10.00% |  |  |  | 10.00% |
Clients exceeding consolidated largest client revenue | Clients |  |  |  |  |  | 0 | 0 |  |  |  |
Consolidated Largest Client Revenue |  |  |  |  |  | 10.00% | 10.00% |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  | $ 234,000 | $ 553,000 |  |  |  |
Assets |  |  |  |  |  | 1,626,653,000 | 1,571,555,000 | 1,577,378,000 |  |  |
Liabilities |  |  |  |  |  | 1,983,456,000 |  | 2,019,758,000 |  |  |
Restricted stock grant date fair value |  |  |  |  |  | 4,153,000 |  |  |  |  |
Adjustment to deferred acquisition consideration included in interest expense |  |  |  |  |  | $ 29,000 | 112,000 |  |  |  |
Series 4 Convertible Preferred Stock [Domain] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Convertible Preferred Shares | shares |  |  |  |  |  | 95,000 |  |  |  |  |
Doner [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage |  |  |  |  | 30.00% |  |  |  |  |  |
Assets |  |  |  |  |  | $ 101,200,000 |  | 102,456,000 |  |  |
Liabilities |  |  |  |  |  | $ 57,450,000 |  | 57,622,000 |  |  |
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 |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  | 7 years |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  | 50.00% |  |  |  |  |
Real Estate Joint Venture [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  | 30.00% |  |  |  |  |
Wells Fargo Capital Finance, LLC |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  | May 03, 2021 |  | Sep. 30, 2019 |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 325,000,000 |  |  |  |  |  |  |
Contingent payment [Domain] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  |  |  |  | $ 11,431,000 | $ 6,327,000 |  |  |  |
Notes due 2020 [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 6.75% |  |  |  |  |
Six Point Seven Five Percentage Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 6.75%
Six Point Seven Five Percentage Notes [Member] | Wells Fargo Capital Finance, LLC |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  |  | Apr. 01, 2020 |  |  |  |  |  |  |  |
Notes due 2024 [Domain] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 6.50% |  |  |  |  |
Six Point Five Zero Percentage Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 6.50% |  |  | 6.50% |  |  |  |  |
Restricted Stock Units (RSUs) [Member] | Common Class A |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross | shares |  |  |  |  |  | 90,000 |  |  |  |  |
Restricted stock grant date fair value |  |  |  |  |  | $ 609,000 |  |  |  |  |
Scenario, Forecast [Member] | Six Point Five Zero Percentage Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date | May 01, 2024 |  |  |  |  |  |  |  |  |  |
Scenario, Forecast [Member] | Six Point Five Zero Percentage Notes [Domain] | Wells Fargo Capital Finance, LLC |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date | May 01, 2024 |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest Equity [Domain] | Aggregate 2016 Step Up Transactions [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  |  |  |  |  |  |  | 19,354 |  |  |
Redeemable Noncontrolling Interest [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Fair Value |  |  |  |  |  | 60,383,000 |  | 60,180,000 |  | $ 69,471,000 |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  |  |  |  |  | 63,000 |  | 1,708,000 |  |  |
Noncontrolling Interest, Increase from Business Combination |  |  |  |  |  | 0 |  | 2,274,000 |  |  |
Changes in redemption value |  |  |  |  |  | 195,000 |  | (9,604,000) |  |  |
Redeemable Noncontrolling Interest Currency Adjustments |  |  |  |  |  | 71,000 |  | $ (253,000) |  |  |
Stock Incentive Plan 2011 [Member] | Stock Appreciation Rights (SARs) [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | shares |  |  |  |  |  |  |  |  | 327,500 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  | $ 6.60 |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options |  |  |  |  |  | $ 770,000 |  |  |  |  |
Stock Incentive Plan 2011 [Member] | Contingent Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross | shares |  |  |  |  |  | 932,600 |  |  |  |  |
Stock Incentive Plan 2016 [Member] | Contingent Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | shares |  |  |  |  |  | 513,321 |  |  |  |  |

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- 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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- Definition The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of new stock issued during the period. + 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(29)) -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 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: 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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: 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 + Details
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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 + Details
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- 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=64801991&loc=SL6759159-111685 + Details
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