Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Valuation allowance	$ 155	$ 109
Preferred stock, par value (in dollars per share)	$ 5	$ 5
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares outstanding	11,116,250	8,720,337