Accumulated Other Comprehensive Loss - Summary of the Tax Effects Allocated to Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Loss
Reclassification adjustment for net gain included in earnings before-tax amount		$ (80)	$ (4)	$ (78)
Reclassification adjustment for net gain included in earnings, Tax (expense) or benefit		19	1	19
Reclassification adjustment for net gain included in earnings net-of-tax amount		(61)	(3)	(59)
Total before income taxes	$ 22	(555)	(1,578)	255
Other comprehensive loss, Tax (expense) or benefit	(5)	135	400	(71)
Total other comprehensive income (loss), net of tax	17	(420)	(1,178)	184
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Loss
Unrealized gain on investments, Net-of-tax amount			(1,175)
Reclassification adjustment for net gain included in earnings net-of-tax amount			(3)
Total other comprehensive income (loss), net of tax	17	(420)	(1,178)	184
Unrealized (loss) and gain on available for sale securities
Accumulated Other Comprehensive Loss
Unrealized gain on investments, Net-of-tax amount			100
Reclassification adjustment for net gain included in earnings net-of-tax amount			(3)
Total other comprehensive income (loss), net of tax			97
Unrealized loss Cash flow hedge, Interest rate swap
Accumulated Other Comprehensive Loss
Unrealized gain on investments, Net-of-tax amount			(1,275)
Total other comprehensive income (loss), net of tax			(1,275)
Unrealized loss Cash flow hedge, Interest rate swap | Interest rate swap
Accumulated Other Comprehensive Loss
Unrealized gain on investments, Before-tax amount	1	(509)	(865)	(509)
Unrealized gain on investments, Tax (expense) or benefit		124	219	124
Unrealized gain on investments, Net-of-tax amount	1	(385)	(646)	(385)
Unrealized loss Cash flow hedge, Interest rate swap | Interest rate swap, unconsolidated affiliates
Accumulated Other Comprehensive Loss
Unrealized gain on investments, Before-tax amount	(2)		(843)
Unrealized gain on investments, Tax (expense) or benefit	1		214
Unrealized gain on investments, Net-of-tax amount	(1)		(629)
Unrestricted available-for-sale, Debt securities | Unrealized (loss) and gain on available for sale securities
Accumulated Other Comprehensive Loss
Unrealized gain on investments, Before-tax amount	21	34	127	824
Unrealized gain on investments, Tax (expense) or benefit	(5)	(8)	(32)	(210)
Unrealized gain on investments, Net-of-tax amount	16	$ 26	95	614
Restricted | Unrealized (loss) and gain on available for sale securities
Accumulated Other Comprehensive Loss
Unrealized gain on investments, Before-tax amount	2		7	18
Unrealized gain on investments, Tax (expense) or benefit	(1)		(2)	(4)
Unrealized gain on investments, Net-of-tax amount	$ 1		$ 5	$ 14