Schedule II - Condensed Financial Information of Registrant - Statement of Cash Flows (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities
Net income (loss)	$ 221,000	$ (18,898,000)	$ (1,067,000)	$ (1,798,000)	$ (4,421,000)	$ (1,475,000)	$ (513,000)	$ (2,028,000)	$ (21,542,000)	$ (8,437,000)	$ (17,000)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Incentive awards expenses - vesting of RSUs									895,000	856,000	303,000
Changes in operating assets and liabilities:
Other assets									4,239,000	(7,139,000)	(904,000)
Net cash provided by (used in) operating activities									9,090,000	6,166,000	(3,136,000)
Cash Flows From Investing Activities
Purchases of property and equipment									(13,000)	(195,000)	(167,000)
Net cash used in investing activities									(25,954,000)	(10,751,000)	(15,294,000)
Cash Flows From Financing Activities
Proceeds received from issuance of shares of common stock									5,000,000	0	36,066,000
Repurchase of common stock									0	(625,000)	0
Repurchase of preferred stock									0	0	(6,275,000)
Borrowings under debt arrangements									32,000,000	7,000,000	4,400,000
Repayment of borrowings under debt arrangements									(19,750,000)	(2,000,000)	(19,212,000)
Dividends paid to preferred shareholders									0	0	(384,000)
Stock and debt issuance costs									(1,011,000)	0	(1,837,000)
Net cash provided by financing activities									16,239,000	4,375,000	12,645,000
Net increase (decrease) in cash									(625,000)	(210,000)	(5,785,000)
Cash at beginning of period				12,493,000				12,703,000	12,493,000	12,703,000	18,488,000
Cash at end of period	11,868,000				12,493,000				11,868,000	12,493,000	12,703,000
Supplemental Disclosure of Cash Flow Information:
Interest paid									876,000	641,000	844,000
Paid-in-kind dividends	0				0				0	0	61,000
Parent Company
Cash Flows from Operating Activities
Net income (loss)									(21,542,000)	(8,437,000)	(17,000)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization									347,000	364,000	321,000
Deferred income taxes									(485,000)	288,000	140,000
Equity in undistributed (income) loss of subsidiaries									22,556,000	1,621,000	(5,363,000)
Incentive awards expenses - vesting of RSUs									895,000	856,000	303,000
Changes in operating assets and liabilities:
Due from subsidiaries									(513,000)	150,000	(921,000)
Due from affiliates									598,000	0	0
Other assets									532,000	(270,000)	(396,000)
Other liabilities									590,000	5,000	(500,000)
Net cash provided by (used in) operating activities									2,978,000	(5,423,000)	(6,433,000)
Cash Flows From Investing Activities
Contributions to subsidiaries									(20,860,000)	(2,100,000)	(7,500,000)
Dividends received from subsidiaries									0	5,450,000	2,700,000
Purchases of investments									(400,000)	0	0
Purchases of property and equipment									(13,000)	(192,000)	(146,000)
Net cash used in investing activities									(21,273,000)	3,158,000	(4,946,000)
Cash Flows From Financing Activities
Proceeds received from issuance of shares of common stock									5,000,000	0	36,066,000
Repurchase of common stock									0	(625,000)	0
Repurchase of preferred stock									0	0	(6,275,000)
Borrowings under debt arrangements									32,000,000	7,000,000	4,400,000
Repayment of borrowings under debt arrangements									(19,750,000)	(2,000,000)	(19,212,000)
Dividends paid to preferred shareholders									0	0	(384,000)
Stock and debt issuance costs									(1,011,000)	0	(1,837,000)
Net cash provided by financing activities									16,239,000	4,375,000	12,758,000
Net increase (decrease) in cash									(2,056,000)	2,110,000	1,379,000
Cash at beginning of period				$ 4,639,000				$ 2,529,000	4,639,000	2,529,000	1,150,000
Cash at end of period	2,583,000				4,639,000				2,583,000	4,639,000	2,529,000
Supplemental Disclosure of Cash Flow Information:
Interest paid									876,000	641,000	844,000
Non-cash dividend received from subsidiaries									0	0	400,000
Paid-in-kind dividends	$ 0				$ 0				$ 0	$ 0	$ 61,000