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Organization and Summary of Significant Accounting Policies - Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Changes in accumulated other comprehensive income (loss) by component |  |  |  |
Beginning balance |  |  | $ 684,928 | $ 787,259
Total other comprehensive income (loss) | $ 2,290 | $ 2,762 | 4,149 | (3,450)
Ending balance | 701,450 | 753,535 | 701,450 | 753,535
Interest expense | 22,892 | 21,365 | 66,817 | 62,842
Benefit from income taxes | 4,795 | 4,878 | 6,052 | 12,712
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Changes in accumulated other comprehensive income (loss) by component |  |  |  |
Beginning balance |  |  | (1,678) | (1,570)
Ending balance | 195 | (2,708) | 195 | (2,708)
Derivatives Cash Flow Hedges |  |  |  |
Changes in accumulated other comprehensive income (loss) by component |  |  |  |
Beginning balance |  |  | (1,678) | (1,570)
Loss recognized in other comprehensive loss, net of tax |  |  | 1,104 | (2,132)
Loss reclassified from accumulated other comprehensive loss, net of tax |  |  | 769 | 994
Total other comprehensive income (loss) |  |  | 1,873 | (1,138)
Ending balance | 195 | (2,708) | 195 | (2,708)
Gain (loss) recognized in other comprehensive income (loss) related to change in fair value of derivative financial instruments before tax | 1,200 | 900 | 1,400 | (3,100)
Tax provision (benefit) of loss recognized in other comprehensive income (loss) related to change in fair value of derivative financial instruments | 300 | 300 | 300 | (1,000)
Derivatives Cash Flow Hedges | Reclassification adjustments | Interest rate swaps |  |  |  |
Changes in accumulated other comprehensive income (loss) by component |  |  |  |
Interest expense | 300 | 500 | 1,200 | 1,500
Benefit from income taxes | $ 100 | $ 100 | $ 400 | $ 500

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