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Acquisitions and Dispositions (Details Textual) - USD ($) |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 15, 2019 | Apr. 01, 2019 | Mar. 08, 2019 | Dec. 31, 2018 | Dec. 31, 2019
Business Acquisition [Line Items] |  |  |  |  |
Deferred acquisition consideration |  |  |  | $ 83,695,000 | $ 75,220,000
Laird - Partners [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Remaining ownership interest acquired (percent) | 35.00% |  |  |  |
Aggregate purchase price | $ 2,389,000 |  |  |  |
Closing cash payment | 1,588,000 |  |  |  |
Deferred acquisition consideration | 801,000 |  |  |  |
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination | 6,005,000 |  |  |  |
Business acquisitions and step-up transactions, net of tax | (5,045,000) |  |  |  |
Business Combination, Acquisition of Less than 100 Percent, Redeemable Noncontrolling Interest, Fair Value | $ 2,656,000 |  |  |  |
Hunter PR LLC [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Remaining ownership interest acquired (percent) |  | 35.00% |  |  |
Aggregate purchase price |  | $ 10,234,000 |  |  |
Closing cash payment |  | 3,890,000 |  |  |
Deferred acquisition consideration |  | 6,344,000 |  |  |
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination |  | 20,178,000 |  |  |
Business acquisitions and step-up transactions, net of tax |  | (9,486,000) |  |  |
Business Combination, Acquisition of Less than 100 Percent, Redeemable Noncontrolling Interest, Fair Value |  | $ 745,000 |  |  |
Aggregate 2018 Acquisitions [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Aggregate purchase price |  |  |  | 56,463,000 |
Deferred acquisition consideration |  |  |  | 16,174,000 |
Business acquisitions and step-up transactions, net of tax |  |  |  | (9,790,000) |
Granted |  |  |  | 4,975,000 |
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value |  |  |  | 15,411,000 |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  |  | $ 1,011,561 |
Kingsdale Partners LP [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Proceeds from divestiture of businesses |  |  | $ 50,000,000 |  |
Loss on disposition of business |  |  | $ (3,000,000) |  |

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