CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect Period Of Adoption Adjustment	Series A Non-Voting Preferred stock	Common stock	Accumulated deficit	Accumulated deficit Cumulative Effect Period Of Adoption Adjustment	Accumulated other comprehensive income (loss)
Beginning balance at Dec. 31, 2018	$ 141,374	$ (207)	$ 8,480	$ 143,466	$ (9,428)	$ (207)	$ (1,144)
Beginning balance (in shares) at Dec. 31, 2018			1,467,000	21,916,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted stock, net	0
Issuance of restricted stock, net (in shares)				102,000
Common stock based compensation expense	200			$ 200
Net income (loss)	882				882
Other comprehensive income	367						367
Ending balance at Mar. 31, 2019	142,616		$ 8,480	$ 143,666	(8,753)		(777)
Ending balance (in shares) at Mar. 31, 2019			1,467,000	22,018,000
Beginning balance at Dec. 31, 2018	$ 141,374	(207)	$ 8,480	$ 143,466	(9,428)	(207)	(1,144)
Beginning balance (in shares) at Dec. 31, 2018			1,467,000	21,916,000
Increase (Decrease) in Stockholders' Equity
Common stock options exercised (in shares)	15,000
Net income (loss)	$ 3,610
Ending balance at Jun. 30, 2019	145,916		$ 0	$ 152,445	(6,025)		(504)
Ending balance (in shares) at Jun. 30, 2019			0	23,515,000
Beginning balance at Dec. 31, 2018	141,374	$ (207)	$ 8,480	$ 143,466	(9,428)	$ (207)	(1,144)
Beginning balance (in shares) at Dec. 31, 2018			1,467,000	21,916,000
Increase (Decrease) in Stockholders' Equity
Other comprehensive income	577
Ending balance at Dec. 31, 2019	149,048			$ 153,570	(3,955)		(567)
Ending balance (in shares) at Dec. 31, 2019				23,574,000
Beginning balance at Mar. 31, 2019	142,616		$ 8,480	$ 143,666	(8,753)		(777)
Beginning balance (in shares) at Mar. 31, 2019			1,467,000	22,018,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted stock, net	0
Issuance of restricted stock, net (in shares)				15,000
Exchange Series A Non-Voting Preferred Stock to Non-Voting Common Stock	0		$ (8,480)	$ 8,480
Exchange Series A Non-Voting Preferred Stock to Non-Voting Common Stock (in shares)			(1,467,000)	(1,467,000)
Common stock based compensation expense	219			$ 219
Common stock options exercised	$ 80			$ 80
Common stock options exercised (in shares)	15,000			15,000
Net income (loss)	$ 2,728				2,728
Other comprehensive income	273						273
Ending balance at Jun. 30, 2019	145,916		$ 0	$ 152,445	(6,025)		(504)
Ending balance (in shares) at Jun. 30, 2019			0	23,515,000
Beginning balance at Dec. 31, 2019	149,048			$ 153,570	(3,955)		(567)
Beginning balance (in shares) at Dec. 31, 2019				23,574,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted stock, net	0
Issuance of restricted stock, net (in shares)				19,000
Common stock based compensation expense	214			$ 214
Common stock options exercised	50			$ 50
Common stock options exercised (in shares)				11,000
Net income (loss)	(2,360)				(2,360)
Other comprehensive income	547						547
Ending balance at Mar. 31, 2020	147,499			$ 153,834	(6,315)		(20)
Ending balance (in shares) at Mar. 31, 2020			23,604,000
Beginning balance at Dec. 31, 2019	$ 149,048			$ 153,570	(3,955)		(567)
Beginning balance (in shares) at Dec. 31, 2019				23,574,000
Increase (Decrease) in Stockholders' Equity
Common stock options exercised (in shares)	10,728
Net income (loss)	$ (455)
Other comprehensive income	688
Ending balance at Jun. 30, 2020	$ 149,757			$ 154,046	(4,410)		121
Ending balance (in shares) at Jun. 30, 2020				23,627,000
Increase (Decrease) in Stockholders' Equity
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201602Member
Beginning balance at Mar. 31, 2020	$ 147,499			$ 153,834	(6,315)		(20)
Beginning balance (in shares) at Mar. 31, 2020			23,604,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted stock, net	0
Issuance of restricted stock, net (in shares)				23,000
Common stock based compensation expense	$ 212			$ 212
Common stock options exercised (in shares)	0
Net income (loss)	$ 1,905				1,905
Other comprehensive income	141						141
Ending balance at Jun. 30, 2020	$ 149,757			$ 154,046	$ (4,410)		$ 121
Ending balance (in shares) at Jun. 30, 2020				23,627,000