Schedule II - Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities:
Net income (loss)	$ 38,890	$ 54,543	$ (43,993)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Amortization of debt issuance costs	300	300	300
Changes in:
Increase (decrease) in other assets	23,938	(15,092)	(8,992)
Increase in other liabilities	(17,036)	(2,377)	48,463
Total adjustments	208,161	178,863	179,170
Net cash provided by operating activities - continuing operations	253,655	232,592	172,266
Investing activities:
Net cash used in investing activities	(288,616)	(297,952)	(160,473)
Financing activities
Proceeds from shares issued	50,878		32
Proceeds from capital contributions			49,968
Proceeds from notes payable		18,000
Repayment of notes payable	(18,000)
Tax withholding on stock compensation awards	(740)
Net cash provided by financing activities	32,138	18,000	50,000
Cash, cash equivalents and restricted cash at beginning of year - continuing operations	29,900	77,872	75,211
Cash, cash equivalents and restricted cash at end of year	27,497	29,900	77,872
Parent Company | Reportable Legal Entities
Operating Activities:
Net income (loss)	38,890	54,543	(43,993)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Amortization of debt issuance costs	338	338	338
Equity in undistributed net losses of subsidiaries, net of tax	(55,879)	(69,419)	16,785
Changes in:
Decrease (increase) in receivables from affiliates	5,882	(9,957)	12,924
(Decrease) increase in payables to affiliates	(8,277)	4,872	(2,121)
Increase (decrease) in other assets	3,844	(1,673)	(1,091)
(Decrease) increase in loans to affiliates	(3,173)
Increase in other liabilities	(3,022)	(6,426)	(3,237)
Total adjustments	(60,287)	(82,265)	23,598
Net cash provided by operating activities - continuing operations	(21,397)	(27,722)	(20,395)
Financing activities
Proceeds from shares issued	50,878		32
Proceeds from capital contributions			49,968
Proceeds from notes payable		18,000
Repayment of notes payable	(18,000)
Tax withholding on stock compensation awards	(740)
Capital contributions to affiliates	(10,490)	9,747	(36,840)
Net cash provided by financing activities	21,648	27,747	13,160
Net increase (decrease) in cash and cash equivalents	251	25	(7,235)
Cash, cash equivalents and restricted cash at beginning of year - continuing operations	522	497	7,732
Cash, cash equivalents and restricted cash at end of year	$ 773	$ 522	$ 497