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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Increase (Decrease) in Stockholders' Equity |  |  |  |
Beginning balance | $ 842,292 | $ 737,873 | $ 841,574 | $ 735,618
Merger-related adjustments |  | 5,670 |  | 5,670
Total other comprehensive income (loss) | (5,320) | 7,475 | (8,545) | 12,182
Ending balance | 832,890 | 830,725 | 832,890 | 830,725
Valuation adjustment | 1,100 |  | 1,800 |
Adjustments related to TCJA |  |  |  | 300
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Beginning balance | 2,548 | 3,194 | 5,773 | 1,197
Gain (loss) recognized in other comprehensive income (loss), net of tax provision of $0, $472, $0 and $888, respectively (1) | (4,529) | 479 | (6,828) | 2,051
(Gain) loss reclassified from accumulated other comprehensive income (loss) to interest expense, net of tax benefit of $0, $(8), $0 and $(53), respectively | (791) | 31 | (1,717) | 456
Merger-related adjustments | 0 | 5,670 | 0 | 5,670
Total other comprehensive income (loss) | (5,320) | 6,180 | (8,545) | 8,177
Ending balance | (2,772) | 9,374 | (2,772) | 9,374
Gain recognized in other comprehensive income, tax | 0 | 472 | 0 | 888
Loss reclassified from accumulated other comprehensive loss, tax | $ 0 | $ (8) | $ 0 | $ (53)

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- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=118951672&loc=d3e1436-108581 + Details
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