Common Stock Incentive, Stock Purchase Plans and Other Compensation Plans - Narrative (Details) - USD ($)	1 Months Ended		3 Months Ended		6 Months Ended		25 Months Ended
	Dec. 31, 2016	Aug. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 13, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercisable	$ 1,400,000		$ 1,400,000		$ 1,400,000		$ 1,400,000
Remaining share-based compensation expense	85,000		85,000		$ 85,000		85,000
Weighted average recognition period on remaining share-based compensation expense					1 year 3 months 7 days
Common stock repurchased - value					$ 1,283,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs recognized related to stock options			18,000	$ 17,000	$ 37,000	$ 71,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average recognition period on remaining share-based compensation expense					1 year 8 months 22 days
Compensation costs recognized related to stock options			74,000	$ 89,000	$ 917,000	$ 178,000
Remaining share-based compensation expense	$ 447,000		$ 447,000		$ 447,000		$ 447,000
Securities Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchase - authorized amount								$ 5,000,000
Share repurchases (in shares)	601,852	192,000			0		188,635
Common stock repurchased - value	$ 975,000	$ 308,000					$ 492,000
Share repurchased, average cost (in dollars per share)	$ 1.62	$ 1.60					$ 2.61