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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 43,220 | $ 31,082 | $ 41,311
Unrealized gains and losses: |  |  |
Unrealized holding losses on available-for-sale securities arising during the period | (1,350) | (5,624) | (2,991)
Tax effect | 532 | 2,142 | 1,196
Net of tax | (818) | (3,482) | (1,795)
Unrealized gains on securities transferred from held-to-maturity to available-for-sale during the period |  | 10,069 |
Tax effect |  | (3,815) |
Net of tax |  | 6,254 |
Reclassification adjustment for realized gains included in net income | (1,596) | (4,234) | (3,931)
Tax effect | 579 | 1,682 | 1,564
Net of tax | (1,017) | (2,552) | (2,367)
Amortization of unrealized net losses on held-to-maturity securities transferred from available-for-sale securities |  | 1,986 | 220
Tax effect |  | (813) | (90)
Net of tax |  | 1,173 | 130
Unrealized gains (losses) on cash flow hedges | 710 | 219 | (179)
Tax effect | (290) | (90) | 73
Net of tax | 420 | 129 | (106)
Unrealized pension plan (losses) gains: |  |  |
Unrealized pension plan gains (losses) before reclassifications | (2) | (2) | 485
Tax effect | 1 | 1 | (198)
Net of tax | (1) | (1) | 287
Reclassification adjustment for realized losses included in net income | 412 | 407 | 433
Tax effect | (169) | (165) | (177)
Net of tax | 243 | 242 | 256
Total other comprehensive income (loss) | (1,173) | 1,763 | (3,595)
Total comprehensive income | $ 42,047 | $ 32,845 | $ 37,716

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