Stock Incentive Plans (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2016	Dec. 31, 2019	Aug. 31, 2007
Stock Incentive Plans (Textual)
Common stock reserved for future issuance of awards	281,775		281,775
Stock intrinsic value	$ 46,960		$ 46,960
Stock options exercisable or outstanding	20,500		20,500
Stock compensation expense	3,000	$ 6,000	8,000	$ 19,000
Unrecognized compensation cost	0		0
Number of restricted stock units granted	30,000	0	$ 30,000	7,000
Restricted stock units, description			Every year at the Company’s annual meeting each member of the Board of Directors is issued an RSU and it vests the following year at the next annual meeting. When such RSU vests, it is automatically converted into $10,000 of the Company’s common stock based upon the closing price the day before the annual meeting.
Stock compensation expense related to restricted stock	0	2,000	$ 8,000	7,000
Stock compensation forfeiture rate			36.13%
Stock option compensation expense	$ 6,000	$ 19,000
Non-vested restricted stock shares	0		0			0
Recognized expense				$ 414,000
2007 Stock Incentive Plan [Member]
Stock Incentive Plans (Textual)
Maximum number of shares awarded or sold							440,769
2016 Plan [Member]
Stock Incentive Plans (Textual)
Common stock reserved for future issuance of awards					281,775
Plan termination date					Mar. 17, 2026