Consolidated Statement of Stockholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss)	Treasury Stock [Member]	Treasury Stock, Common [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		29,498,947
Stock Issued During Period, Shares, Share-based Compensation, Net of Tax Withholdings		622,549
Stock Issued During Period, Value, Share-based Compensation, Net of Tax Withholdings	$ 1,375		$ 1,375
Beginning Balance at Dec. 31, 2016	44,715	$ 0	129,574	$ (81,281)	$ (377)	$ (3,201)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	3,562		3,562
Other comprehensive income (loss), net of taxes	285				285
Net loss	(1,503)			(1,503)
Ending Balance at Dec. 31, 2017	$ 48,434	$ 0	134,511	(82,784)	(92)	(3,201)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		30,121,496
Stock Issued During Period, Shares, New Issues	2,090,909	2,090,909
Proceeds from issuance of common stock, follow-on public offering	$ 65,638		65,638
Payments to Acquire Buildings, Shares		303,030
Payment to Acquire Corporate Building, Fair Value of Shares	9,633		9,633
Stock Issued During Period, Shares, Share-based Compensation, Net of Tax Withholdings		1,278,386
Stock Issued During Period, Value, Share-based Compensation, Net of Tax Withholdings	1,806		1,806
Redemption of warrants		231,315
Settlement of warrant liabilities	300		3,300				$ (3,000)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	4,950		4,950
Other comprehensive income (loss), net of taxes	(661)				(661)
Net loss	(927)			(927)
Ending Balance at Dec. 31, 2018	129,173	$ 0	219,838	(83,711)	(753)	(6,201)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		34,025,136
Stock Issued During Period, Shares, Share-based Compensation, Net of Tax Withholdings		615,761
Stock Issued During Period, Value, Share-based Compensation, Net of Tax Withholdings	1,043		1,043
Redemption of warrants		306,120
Settlement of warrant liabilities	300		4,800				$ (4,500)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	7,050		7,050
Other comprehensive income (loss), net of taxes	1,003
Net loss	(1,809)
Ending Balance at Dec. 31, 2019	$ 136,760	$ 0	$ 232,731	$ (85,520)	$ 250	$ (10,701)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding	34,947,017	34,947,017