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Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands | Total | Series D convertible preferred stock | Common Stock | Preferred Stock Series D convertible preferred stock | Additional Paid-in Capital | Accumulated Deficit | Accumulated Other Comprehensive Income (Loss) | Treasury Stock | Total Attributed To Stockholders | Total Attributed To Stockholders Series D convertible preferred stock | Non- controlling Interests
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance (in shares) at Dec. 31, 2016 |  |  | 5,889,013 | 0 |  |  |  | 3,230,045 |  |  |
Beginning Balance at Dec. 31, 2016 | $ 321,673 |  | $ 91 | $ 0 | $ 1,090,331 | $ (424,279) | $ (224) | $ (344,246) | $ 321,673 |  | $ 0
Cumulative effect adjustment for adoption of ASU at Dec. 31, 2016 | 1,051 |  |  |  |  | 1,051 |  |  | 1,051 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 32,587 |  |  |  |  | 31,514 |  |  | 31,514 |  | 1,073
Net unrealized gain (loss) on securities available-for-sale | 172 |  |  |  |  |  | 172 |  | 172 |  |
Foreign currency translation adjustments | 12 |  |  |  |  |  | 12 |  | 12 |  |
Net subscriptions (redemptions) and other | 15,414 |  |  |  |  |  |  |  |  |  | 15,414
Issuance of stock, net of offering costs (in shares) |  |  | 1,046,500 | 1,150,000 |  |  |  |  |  |  |
Issuance of stock, net of offering costs | 109,328 | $ 110,843 | $ 11 | $ 110,843 | 109,317 |  |  |  | 109,328 | $ 110,843 |
Cash dividends declared, preferred | (6,253) |  |  |  | (6,253) |  |  |  | (6,253) |  |
Issuance of common stock for acquisition of business (in shares) |  |  | 213,669 |  |  |  |  |  |  |  |
Issuance of common stock for acquisition of business | 21,740 |  | $ 2 |  | 21,738 |  |  |  | 21,740 |  |
Cash dividends declared, common | (10,103) |  |  |  | (10,103) |  |  |  | (10,103) |  |
Repurchases of common shares (in shares) |  |  | (66,244) |  |  |  |  | (66,244) |  |  |
Repurchases of common shares | (7,502) |  | $ 0 |  | 0 |  |  | $ (7,502) | (7,502) |  |
Issuance of common shares related to employee stock transactions (in shares) |  |  | 75,077 |  |  |  |  |  |  |  |
Issuance of common shares related to employee stock transactions | 836 |  | $ 1 |  | 835 |  |  |  | 836 |  |
Taxes paid on stock-based compensation | (3,441) |  |  |  | (3,441) |  |  |  | (3,441) |  |
Stock-based compensation | 14,317 |  |  |  | 14,317 |  |  |  | 14,317 |  |
Ending Balance (in shares) at Sep. 30, 2017 |  |  | 7,158,015 | 1,150,000 |  |  |  | 3,296,289 |  |  |
Ending Balance at Sep. 30, 2017 | 600,674 |  | $ 105 | $ 110,843 | 1,216,741 | (391,714) | (40) | $ (351,748) | 584,187 |  | 16,487
Beginning Balance at Dec. 31, 2016 | 37,266 |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) attributable to noncontrolling interests | 1,709 |  |  |  |  |  |  |  |  |  |
Net subscriptions (redemptions) and other | 28,252 |  |  |  |  |  |  |  |  |  |
Ending Balance at Sep. 30, 2017 | 67,227 |  |  |  |  |  |  |  |  |  |
Beginning Balance (in shares) at Dec. 31, 2017 |  |  | 7,159,645 | 1,150,000 |  |  |  | 3,296,289 |  |  |
Beginning Balance at Dec. 31, 2017 | 605,224 |  | $ 105 | $ 110,843 | 1,216,173 | (386,216) | (600) | $ (351,748) | 588,557 |  | 16,667
Cumulative effect adjustment for adoption of ASU at Dec. 31, 2017 |  |  |  |  |  | (178) | 178 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Acquisition of businesses | 55,500 |  |  |  |  |  |  |  |  |  |
Net income (loss) | 74,244 |  |  |  |  | 73,368 |  |  | 73,368 |  | 876
Net unrealized gain (loss) on securities available-for-sale | (168) |  |  |  |  |  | (168) |  | (168) |  |
Foreign currency translation adjustments | (10) |  |  |  |  |  | (10) |  | (10) |  |
Net subscriptions (redemptions) and other | (2,036) |  |  |  |  |  |  |  |  |  | (2,036)
Cash dividends declared, preferred | (6,253) |  |  |  | (6,253) |  |  |  | (6,253) |  |
Cash dividends declared, common | $ (11,099) |  |  |  | (11,099) |  |  |  | (11,099) |  |
Repurchases of common shares (in shares) | (98,806) |  | (98,806) |  |  |  |  | (98,806) |  |  |
Repurchases of common shares | $ (12,501) |  |  |  |  |  |  | $ (12,501) | (12,501) |  |
Issuance of common shares related to employee stock transactions (in shares) |  |  | 85,763 |  |  |  |  |  |  |  |
Issuance of common shares related to employee stock transactions | 1,444 |  |  |  | 1,444 |  |  |  | 1,444 |  |
Taxes paid on stock-based compensation | (6,517) |  |  |  | (6,517) |  |  |  | (6,517) |  |
Stock-based compensation | 16,897 |  |  |  | 16,897 |  |  |  | 16,897 |  |
Ending Balance (in shares) at Sep. 30, 2018 |  |  | 7,146,602 | 1,150,000 |  |  |  | 3,395,095 |  |  |
Ending Balance at Sep. 30, 2018 | 659,225 |  | $ 105 | $ 110,843 | $ 1,210,645 | $ (313,026) | $ (600) | $ (364,249) | $ 643,718 |  | $ 15,507
Beginning Balance at Dec. 31, 2017 | 4,178 |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Redeemable Non-controlling Interests [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) attributable to noncontrolling interests | 743 |  |  |  |  |  |  |  |  |  |
Net subscriptions (redemptions) and other | (173) |  |  |  |  |  |  |  |  |  |
Ending Balance at Sep. 30, 2018 | $ 60,248 |  |  |  |  |  |  |  |  |  |

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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4568740-111683 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4590271-111686 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4568447-111683 + Details
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- Definition Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.27(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The portion of net income or loss attributable to temporary equity interest. + References No definition available. + Details
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- Definition Amount of increase (decrease) in temporary equity from changes classified as other. + References No definition available. + Details
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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