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Parent Company Only Condensed Financial Information - Condensed Parent Company Only Statements of Cash Flows (Details) - USD ($) |  |  | 12 Months Ended
--- | --- | --- | ---
Apr. 12, 2018 | Aug. 01, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cash flows from operating activities: |  |  |  |  |  |
Net income |  |  |  | $ 51,708,000 | $ 36,220,000 | $ 20,700,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |  |  |  |
Net accretion of securities |  |  |  | 947,000 | 638,000 | 2,285,000
Amortization of junior subordinated debentures |  |  |  | 460,000 | 413,000 | 325,000
Amortization of subordinated notes issuance costs |  |  |  | 101,000 | 94,000 | 23,000
Loss on intercompany sale of loans |  |  |  |  |  | 794,000
Loss on sale of loans |  |  |  |  | 80,000 | (154,000)
Income from CLO warehouse investments |  |  |  |  | (2,226,000) | (3,184,000)
Change in other assets |  |  |  | (8,385,000) | 1,515,000 | 1,197,000
Net cash provided by (used in) operating activities |  |  |  | 73,830,000 | 47,273,000 | 30,983,000
Cash flows from investing activities: |  |  |  |  |  |
Purchases of securities held to maturity |  |  |  |  | (5,092,000) | (29,117,000)
Proceeds from maturities, calls, and pay downs of securities held to maturity |  |  |  | 1,053,000 | 28,216,000 | 136,000
Proceeds from sale of loans |  |  |  | 9,781,000 | 3,834,000 | 24,538,000
Net change in loans |  |  |  | (388,276,000) | (586,120,000) | (295,315,000)
Net cash paid for CLO warehouse investments |  |  |  |  | (10,000,000) | (25,000,000)
Net proceeds from CLO warehouse investments |  |  |  |  | 30,000,000 | 25,500,000
Net cash provided by (used in) investing activities |  |  |  | (268,307,000) | (379,771,000) | (273,556,000)
Cash flows from financing activities: |  |  |  |  |  |
Proceeds from issuance of subordinated notes, net |  |  |  |  |  | 48,676,000
Issuance of common stock, net of issuance costs |  | $ 192,053,000 | $ 65,509,000 | 192,053,000 | 65,509,000 |
Dividends on preferred stock |  |  |  | (578,000) | (774,000) | (887,000)
Purchase of treasury stock |  |  |  | (398,000) | (366,000) | (654,000)
Stock option exercises |  |  |  | (4,000) | 283,000 |
Net cash provided by (used in) financing activities |  |  |  | 295,287,000 | 352,113,000 | 251,810,000
Net increase (decrease) in cash and cash equivalents |  |  |  | 100,810,000 | 19,615,000 | 9,237,000
Cash and cash equivalents at beginning of period |  |  |  | 134,129,000 | 114,514,000 | 105,277,000
Cash and cash equivalents at end of period |  |  |  | 234,939,000 | 134,129,000 | 114,514,000
TARP Preferred Stock |  |  |  |  |  |
Cash flows from financing activities: |  |  |  |  |  |
Redemption of TARP preferred stock |  |  |  |  |  | (10,500,000)
Parent Company |  |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |
Net income |  |  |  | 51,708,000 | 36,892,000 | 20,028,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |  |  |  |
Equity in undistributed subsidiary income |  |  |  | (58,957,000) | (30,347,000) | (22,308,000)
Net accretion of securities |  |  |  | (983,000) | (800,000) | (174,000)
Amortization of junior subordinated debentures |  |  |  | 460,000 | 413,000 | 325,000
Amortization of subordinated notes issuance costs |  |  |  | 101,000 | 94,000 | 23,000
Loss on intercompany sale of loans | [1] |  |  |  |  | 794,000
Loss on sale of loans |  |  |  |  |  | 80,000
Income from CLO warehouse investments |  |  |  |  | (2,226,000) | (3,184,000)
Change in other assets |  |  |  | 1,273,000 | 6,689,000 | 3,293,000
Change in accrued expenses and other liabilities |  |  |  | (6,458,000) | 2,950,000 | (5,279,000)
Net cash provided by (used in) operating activities |  |  |  | (12,856,000) | 13,665,000 | (6,402,000)
Cash flows from investing activities: |  |  |  |  |  |
Investment in subsidiaries |  |  |  | (58,718,000) | (6,199,000) | 14,295,000
Purchases of securities held to maturity |  |  |  |  | (5,092,000) | (3,342,000)
Proceeds from maturities, calls, and pay downs of securities held to maturity |  |  |  | 1,053,000 | 715,000 | 136,000
Proceeds from sale of loans |  |  |  |  |  | 16,058,000
Net change in loans |  |  |  | 1,134,000 | (10,062,000) | 539,000
Net cash paid for CLO warehouse investments |  |  |  |  | (10,000,000) | (25,000,000)
Net proceeds from CLO warehouse investments |  |  |  |  | 30,000,000 | 25,500,000
Cash used in acquisition of subsidiaries, net |  |  |  | (137,806,000) | (40,075,000) | (69,946,000)
Net cash provided by (used in) investing activities |  |  |  | (194,337,000) | (40,713,000) | (41,760,000)
Cash flows from financing activities: |  |  |  |  |  |
Proceeds from issuance of subordinated notes, net |  |  |  |  |  | 48,676,000
Issuance of common stock, net of issuance costs |  |  |  | 192,053,000 | 65,509,000 |
Dividends on preferred stock |  |  |  | (578,000) | (774,000) | (887,000)
Purchase of treasury stock |  |  |  | (398,000) | (366,000) | (654,000)
Stock option exercises |  |  |  | (4,000) | 283,000 |
Net cash provided by (used in) financing activities |  |  |  | 191,073,000 | 64,652,000 | 36,635,000
Net increase (decrease) in cash and cash equivalents |  |  |  | (16,120,000) | 37,604,000 | (11,527,000)
Cash and cash equivalents at beginning of period |  |  |  | 47,826,000 | 10,222,000 | 21,749,000
Cash and cash equivalents at end of period |  |  |  | $ 31,706,000 | $ 47,826,000 | 10,222,000
Parent Company | TARP Preferred Stock |  |  |  |  |  |
Cash flows from financing activities: |  |  |  |  |  |
Redemption of TARP preferred stock |  |  |  |  |  | $ (10,500,000)
[1] | During the year ended December 31, 2016, a loss was recorded by the parent company as the result of an intercompany sale of loans to its subsidiary, TBK Bank, at the loans’ fair value. The discount on the purchase of the loans recorded by TBK Bank was fully amortized during the year ended December 31, 2017. The parent company loss on sale of the loans and the TBK Bank discount were eliminated in consolidation. The following table presents a reconciliation of parent company net income available to common stockholders to consolidated net income available to common stockholders: Year Ended December 31, (Dollars in thousands) 2018 2017 2016 Parent company net income available to common stockholders $51,130 $36,118 $19,141 Parent company loss on intercompany sale of loans — — 794 TBK Bank discount accretion — (672) (122) Consolidated net income available to common stockholders $51,130 $35,446 $19,813

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