CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
CONSOLIDATED BALANCE SHEETS
Accounts receivable, reserves (in dollars)	$ 2,409	$ 2,286
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common Stock, Shares Authorized	24,000,000	24,000,000
Common Stock, Shares, Issued	9,872,894	10,056,929
Common Stock, Shares, Outstanding	9,872,894	10,056,929