Derivatives and Hedging - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Gains (Losses) on Cash Flow Hedges
Balance as of December 31, 2018	$ 13,253
Balance as of March 31, 2019	9,619
Income Tax Expense
Balance as of December 31, 2018	(4,973)
Balance as of March 31, 2019	(4,067)
Accumulated Other Comprehensive Income (Loss), net of taxes
Balance as of December 31, 2018	8,280
Balance as of March 31, 2019	5,552
Gains (Losses) on Cash Flow Hedges
Gains (Losses) on Cash Flow Hedges
Net change in unrealized gain (loss)	(2,386)
Amounts reclassified from accumulated other comprehensive income to interest expense	(1,248)
Net current period accumulated other comprehensive income (loss)	(3,634)
Income Tax Expense
Net change in unrealized gain (loss)	595
Amounts reclassified from accumulated other comprehensive income to interest expense	311
Net current period accumulated other comprehensive income (loss)	906
Accumulated Other Comprehensive Income (Loss), net of taxes
Net change in unrealized gain (loss)	(1,791)
Amounts reclassified from accumulated other comprehensive income to interest expense	(937)
Net current period accumulated other comprehensive income (loss)	$ (2,728)