| Accumulated Other Comprehensive Income |
Accumulated Other Comprehensive Income The following table presents a rollforward of amounts recognized in accumulated other comprehensive income by component for the three months ended March 31, 2019 and 2018 (amounts in thousands): | | | | | | | | Unrealized Income on Derivative
Instruments | Balance as of December 31, 2018 | | $ | 6,100 |
| Cumulative effect of accounting change | | 103 |
| Balance as of January 1, 2019 | | 6,203 |
| Other comprehensive loss before reclassification | | (2,955 | ) | Amount of income reclassified from accumulated other comprehensive income to net income | | (656 | ) | Other comprehensive income | | (3,611 | ) | Balance as of March 31, 2019 | | $ | 2,592 |
|
| | | | | | | | Unrealized Income on Derivative
Instruments | Balance as of December 31, 2017 | | $ | 3,710 |
| Other comprehensive income before reclassification | | 4,446 |
| Amount of loss reclassified from accumulated other comprehensive income to net income | | 129 |
| Other comprehensive income | | 4,575 |
| Balance as of March 31, 2018 | | $ | 8,285 |
|
The following table presents reclassifications out of accumulated other comprehensive income for the three months ended March 31, 2019 and 2018 (amounts in thousands): | | | | | | | | | | | Details about Accumulated Other
Comprehensive Income Components | | Amounts Reclassified from
Accumulated Other Comprehensive Income to Net
Income | Affected Line Items in the Condensed Consolidated Statements of Comprehensive Income | | | Three Months Ended
March 31, | | | | 2019 | | 2018 | | Interest rate swap contracts | | $ | (656 | ) | | $ | 129 |
| Interest and other expense, net |
|
Accumulated Other Comprehensive Income The following table presents a rollforward of amounts recognized in accumulated other comprehensive income by component for the years ended December 31, 2018, 2017 and 2016 (amounts in thousands): | | | | | | | | Unrealized Income on Derivative
Instruments | Balance as of December 31, 2016 | | $ | 840 |
| Other comprehensive income before reclassification | | 1,484 |
| Amount of loss reclassified from accumulated other comprehensive income to net income (effective portion) | | 1,386 |
| Other comprehensive income | | 2,870 |
| Balance as of December 31, 2017 | | $ | 3,710 |
| Other comprehensive income before reclassification | | 3,208 |
| Amount of income reclassified from accumulated other comprehensive income to net income (effective portion) | | (818 | ) | Other comprehensive income | | 2,390 |
| Balance as of December 31, 2018 | | $ | 6,100 |
|
The following table presents reclassifications out of accumulated other comprehensive income for the years ended December 31, 2018, 2017 and 2016 (amounts in thousands): | | | | | | | | | | | | | | | Details about Accumulated Other
Comprehensive Income Components | | Amounts Reclassified from
Accumulated Other Comprehensive Income to Net
Income | Affected Line Items in the Consolidated Statements of Comprehensive Income | | | For the Year Ended
December 31, | | | | 2018 | | 2017 | | 2016 | | Interest rate swap contracts | | $ | (818 | ) | | $ | 1,386 |
| | $ | 96 |
| Interest and other expense, net |
|