Share Buyback Program (Details) $ in Thousands		12 Months Ended
	Oct. 04, 2019 USD ($) shares	Dec. 31, 2019 USD ($) Program shares	Nov. 26, 2008 shares
Disclosure of Repurchase Agreements [Abstract]
Common stock available for repurchase (in shares) | shares	1,000		1,000,000
Share repurchase program, term	1 year
Stock repurchase program, authorized amount | $	$ 5
Stock repurchased during period (in shares) | shares		115
Stock repurchased during period, value | $		$ 1,300
Number of other repurchase programs outstanding | Program		0