Accumulated Other Comprehensive Loss - Summary of the Tax Effects Allocated to Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Loss
Reclassification adjustment for net gain included in earnings before-tax amount	$ (4)	$ 2
Reclassification adjustment for net gain included in earnings, Tax (expense) or benefit	1
Reclassification adjustment for net gain included in earnings net-of-tax amount	(3)	2
Total before income taxes	(743)	812
Other comprehensive loss, Tax (expense) or benefit	188	(206)
Total other comprehensive (loss) income, net of tax	(555)	606
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Loss
Unrealized gain (loss) on investments, Net-of-tax amount	(552)
Reclassification adjustment for net gain included in earnings net-of-tax amount	(3)
Total other comprehensive (loss) income, net of tax	(555)	606
Unrealized (loss) and gain on available for sale securities
Accumulated Other Comprehensive Loss
Unrealized gain (loss) on investments, Net-of-tax amount	(8)
Reclassification adjustment for net gain included in earnings net-of-tax amount	(3)
Total other comprehensive (loss) income, net of tax	(11)
Unrealized loss Cash flow hedge, Interest rate swap
Accumulated Other Comprehensive Loss
Unrealized gain (loss) on investments, Before-tax amount	(729)
Unrealized gain (loss) on investments, Tax (expense) or benefit	185
Unrealized gain (loss) on investments, Net-of-tax amount	(544)
Total other comprehensive (loss) income, net of tax	(544)
Unrestricted available-for-sale, Debt securities | Unrealized (loss) and gain on available for sale securities
Accumulated Other Comprehensive Loss
Unrealized gain (loss) on investments, Before-tax amount		799
Unrealized gain (loss) on investments, Tax (expense) or benefit		(203)
Unrealized gain (loss) on investments, Net-of-tax amount		596
Restricted | Unrealized (loss) and gain on available for sale securities
Accumulated Other Comprehensive Loss
Unrealized gain (loss) on investments, Before-tax amount	(10)	11
Unrealized gain (loss) on investments, Tax (expense) or benefit	2	(3)
Unrealized gain (loss) on investments, Net-of-tax amount	$ (8)	$ 8