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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Accumulated Deficit | Accumulated Other Comprehensive Income (Loss) | Treasury Stock | Total Attributed To Shareholders | Non- controlling Interest | Series D preferred stock | Series D preferred stock Preferred Stock | Series D preferred stock Total Attributed To Shareholders
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2014 |  | 8,975,833 |  |  |  | 575,441 |  |  |  |  |
Balance at Dec. 31, 2014 | $ 563,352 | $ 96 | $ 1,148,908 | $ (507,521) | $ (242) | $ (77,699) | $ 563,542 | $ (190) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 34,930 |  |  | 35,106 |  |  | 35,106 | (176) |  |  |
Net unrealized gain (loss)on securities available-for-sale | (358) |  |  |  | (358) |  | (358) |  |  |  |
Foreign currency translation adjustment | (434) |  |  |  | (434) |  | (434) |  |  |  |
Activity of noncontrolling interests, net |  |  |  | (199) |  |  | (199) | 199 |  |  |
Cash dividends declared | (16,009) |  | (16,009) |  |  |  | (16,009) |  |  |  |
Repurchase of common shares (in shares) |  | (638,703) |  |  |  | (638,703) |  |  |  |  |
Repurchase of common shares | (80,000) |  |  |  |  | $ (80,000) | (80,000) |  |  |  |
Issuance of common shares related to employee stock transactions (in shares) |  | 61,814 |  |  |  |  |  |  |  |  |
Issuance of common shares related to employee stock transactions | 842 |  | 842 |  |  |  | 842 |  |  |  |
Taxes paid on stock-based compensation | (5,080) |  | (5,080) |  |  |  | (5,080) |  |  |  |
Stock-based compensation | 11,116 |  | 11,116 |  |  |  | 11,116 |  |  |  |
Excess tax benefits (tax deficiencies) from stock-based compensation | 1,098 |  | 1,098 |  |  |  | 1,098 |  |  |  |
Balance (in shares) at Dec. 31, 2015 |  | 8,398,944 |  |  |  | 1,214,144 |  |  |  |  |
Balance at Dec. 31, 2015 | 509,457 | $ 96 | 1,140,875 | (472,614) | (1,034) | $ (157,699) | 509,624 | (167) |  |  |
Balance at Dec. 31, 2014 | 23,071 |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | (4,259) |  |  |  |  |  |  |  |  |  |
Activity of noncontrolling interests, net | 55,052 |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2015 | 73,864 |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 48,502 |  |  | 48,502 |  |  | 48,502 | 0 |  |  |
Net unrealized gain (loss)on securities available-for-sale | 241 |  |  |  | 241 |  | 241 |  |  |  |
Foreign currency translation adjustment | 569 |  |  |  | 569 |  | 569 |  |  |  |
Activity of noncontrolling interests, net |  |  |  | (167) |  |  | (167) | 167 |  |  |
Cash dividends declared | (13,015) |  | (13,015) |  |  |  | (13,015) |  |  |  |
Repurchase of common shares (in shares) |  | (2,572,417) |  |  |  | (2,015,901) |  |  |  |  |
Repurchase of common shares | (233,757) | $ (6) | (47,204) |  |  | $ (186,547) | (233,757) |  |  |  |
Issuance of common shares related to employee stock transactions (in shares) |  | 62,486 |  |  |  |  |  |  |  |  |
Issuance of common shares related to employee stock transactions | 1,055 | $ 1 | 1,054 |  |  |  | 1,055 |  |  |  |
Taxes paid on stock-based compensation | (1,530) |  | (1,530) |  |  |  | (1,530) |  |  |  |
Stock-based compensation | 11,449 |  | 11,449 |  |  |  | 11,449 |  |  |  |
Excess tax benefits (tax deficiencies) from stock-based compensation | (1,298) |  | (1,298) |  |  |  | (1,298) |  |  |  |
Balance (in shares) at Dec. 31, 2016 |  | 5,889,013 |  |  |  | 3,230,045 |  |  |  |  |
Balance at Dec. 31, 2016 | 321,673 | $ 91 | 1,090,331 | (424,279) | (224) | $ (344,246) | 321,673 | 0 |  |  |
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 261 |  |  |  |  |  |  |  |  |  |
Activity of noncontrolling interests, net | (36,859) |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2016 | 37,266 |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Cumulative effect adjustment for adoption of ASU 2016-09 | 1,051 |  |  | 1,051 |  |  | 1,051 |  |  |  |
Net income (loss) | 38,519 |  |  | 37,012 |  |  | 37,012 | 1,507 |  |  |
Net unrealized gain (loss)on securities available-for-sale | (388) |  |  |  | (388) |  | (388) |  |  |  |
Foreign currency translation adjustment | 12 |  |  |  | 12 |  | 12 |  |  |  |
Activity of noncontrolling interests, net | $ 15,160 |  |  |  |  |  |  | 15,160 |  |  |
Issuance of stock, net of offering costs (in shares) | 1,260,169 | 1,046,500 |  |  |  |  |  |  |  | 1,150,000 |
Issuance of stock, net of offering costs | $ 109,327 | $ 11 | 109,316 |  |  |  | 109,327 |  | $ 110,843 | $ 110,843 | $ 110,843
Dividends | (8,337) |  | (8,337) |  |  |  | (8,337) |  |  |  |
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 | $ (13,545) |  | (13,545) |  |  |  | (13,545) |  |  |  |
Repurchase of common shares (in shares) | (66,244) | (66,244) |  |  |  | (66,244) |  |  |  |  |
Repurchase of common shares | $ (7,502) |  |  |  |  | $ (7,502) | (7,502) |  |  |  |
Issuance of common shares related to employee stock transactions (in shares) |  | 76,707 |  |  |  |  |  |  |  |  |
Issuance of common shares related to employee stock transactions | 841 | $ 1 | 840 |  |  |  | 841 |  |  |  |
Taxes paid on stock-based compensation | (3,499) |  | (3,499) |  |  |  | (3,499) |  |  |  |
Stock-based compensation | 19,329 |  | 19,329 |  |  |  | 19,329 |  |  |  |
Balance (in shares) at Dec. 31, 2017 |  | 7,159,645 |  |  |  | 3,296,289 |  |  |  | 1,150,000 |
Balance at Dec. 31, 2017 | 605,224 | $ 105 | $ 1,216,173 | $ (386,216) | $ (600) | $ (351,748) | $ 588,557 | $ 16,667 |  | $ 110,843 |
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 1,420 |  |  |  |  |  |  |  |  |  |
Activity of noncontrolling interests, net | (34,508) |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2017 | $ 4,178 |  |  |  |  |  |  |  |  |  |

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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://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 Reference 2: 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 3: 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=84159872&loc=d3e21463-112644 Reference 4: 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 + 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://www.xbrl.org/2003/role/presentationRef -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4568740-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=96868048&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.27(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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://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 Reference 2: 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 3: 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=84159872&loc=d3e21463-112644 + Details
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