Schedule II - Condensed Financial Information of Registrant (Parent Company Only) (Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ 10,347	$ (11,553)
Adjustments to reconcile net income (loss) to cash (used in) provided by operating activities:
Depreciation and amortization expense	5,141	4,715
Deferred income tax expense (benefit)	(1,844)	(1,575)
Change in current federal income tax recoverable	7,536	(3,581)
Change in all other liabilities	(267)	3,091
Change in all other assets	3,007	5,487
Net cash (used in) provided by operating activities	(32,935)	7,199
Cash flows from investing activities:
Purchases of property and equipment	(2,101)	(2,705)
Purchase of investment securities	(222,642)	(305,930)
Maturities and redemptions of investment securities	232,081	287,187
Net cash provided by (used in) investing activities	7,338	(21,448)
Cash flows from financing activities:
Proceeds from exercise of employee stock options	242	231
Purchase of treasury shares	(1,807)	(5,308)
Net cash used in financing activities	(1,565)	(5,077)
Cash and cash equivalents at beginning of year	64,982
Cash and cash equivalents at end of year	35,594	64,982
Supplemental cash flow information:
Interest paid	4,842	4,506
Income taxes paid	(3,236)	137
Parent Company [Member]
Cash flows from operating activities:
Net income (loss)	10,347	(11,553)
Adjustments to reconcile net income (loss) to cash (used in) provided by operating activities:
Depreciation and amortization expense	377	367
Deferred income tax expense (benefit)	51	(160)
Net realized losses		(759)
Undistributed share of (earnings) loss of subsidiaries	(5,430)	20,445
Change in current federal income tax recoverable	(2,219)	(1,158)
Change in all other liabilities	(3,075)	306
Change in all other assets	(466)	632
Net cash (used in) provided by operating activities	(415)	9,638
Cash flows from investing activities:
Purchases of property and equipment	(55)	(97)
Purchase of investment securities		(1,304)
Net cash provided by (used in) investing activities	(55)	(1,401)
Cash flows from financing activities:
Proceeds from exercise of employee stock options	242	231
Purchase of treasury shares	(1,807)	(5,308)
Net cash used in financing activities	(1,565)	(5,077)
Decrease in cash and cash equivalents and restricted cash	(2,035)	3,160
Cash and cash equivalents at beginning of year	12,194	9,034
Cash and cash equivalents at end of year	10,159	12,194
Supplemental cash flow information:
Interest paid	4,842	4,506
Income taxes paid	$ 1,996	$ 372