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Organization and Summary of Significant Accounting Policies - Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Changes in accumulated other comprehensive income (loss) by component |  |
Beginning balance | $ 735,618 | $ 684,928
Total other comprehensive income | 4,707 | 1,440
Ending balance | 737,873 | 675,298
Interest expense | 22,547 | 21,421
Benefit from income taxes | (354) | (323)
Accumulated Other Comprehensive Income (Loss) |  |
Changes in accumulated other comprehensive income (loss) by component |  |
Beginning balance | 1,197 | (1,678)
Ending balance | 3,194 | (1,129)
Derivatives Cash Flow Hedges |  |
Changes in accumulated other comprehensive income (loss) by component |  |
Beginning balance | 1,197 | (1,678)
Loss recognized in other comprehensive loss, net of tax | 1,572 | 236
Loss reclassified from accumulated other comprehensive loss, net of tax | 425 | 313
Total other comprehensive income | 1,997 | 549
Ending balance | 3,194 | (1,129)
Gain (loss) recognized in other comprehensive income (loss) related to change in fair value of derivative financial instruments before tax | 2,000 | 300
Tax provision (benefit) of loss recognized in other comprehensive income (loss) related to change in fair value of derivative financial instruments | 400 | 100
Derivatives Cash Flow Hedges | Reclassification adjustments | Interest rate swaps |  |
Changes in accumulated other comprehensive income (loss) by component |  |
Interest expense | 200 | 500
Benefit from income taxes | $ 300 | $ 200

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