Share-Based Compensation - Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) $ / shares shares
Number of Options
Outstanding at beginning of year (in shares) | shares	1,608,646
Granted (in shares) | shares	0
Expired/canceled/forfeited (in shares) | shares	(121,823)
Exercised (in shares) | shares	0
Outstanding at end of year (in shares) | shares	1,486,823
Wgtd. Avg. Exercise Price
Outstanding at beginning of year (in dollars per share) | $ / shares	$ 6.20
Granted (in dollars per share) | $ / shares	0.00
Expired/canceled/forfeited (in dollars per share) | $ / shares	4.98
Exercised (in dollars per share) | $ / shares	0.00
Outstanding at end of year (in dollars per share) | $ / shares	$ 6.34
Additional Disclosures
Options exercisable at end of year (in shares) | shares	1,047,590
Options exercisable at end of year (usd per share) | $ / shares	$ 7.78
Outstanding, remaining contractual term	7 years 11 days
Exercisable, remaining contractual term	6 years 7 months 21 days
Outstanding, intrinsic value | $	$ 0
Exercisable, intrinsic value | $	$ 0