Stock Compensation Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Payment Award [Line Items]
Compensation expense		$ 64
Summary of the Status of the Plan [Roll Forward]
Stock options exercised (in shares)	33,666
Weighted Average Exercise Price [Roll Forward]
Exercised, weighted average exercise price (in dollars per share)	$ 1.54
Weighted average fair value of options granted during the year (in dollars per share)	1.13	$ 1.14
Non-vested, Weighted Average Grant Date Fair Value [Roll Forward]
Granted, weighted average grant date fair value (in dollars per share)	$ 1.13	$ 1.14
Employee Stock Option
Share-based Payment Award [Line Items]
Compensation expense	$ 85
Restricted stock
Share-based Payment Award [Line Items]
Compensation expense		$ 78
Unrestricted Portion [Member]
Share-based Payment Award [Line Items]
Compensation expense	$ 70
Employee Stock Option Plan And Appreciation Right Plan [Member]
Summary of the Status of the Plan [Roll Forward]
Options outstanding at beginning of year (in shares)	19,061	35,612
Forfeited (in shares)	(3,560)	(1,749)
Expired (in shares)	(15,501)	(14,802)
Options outstanding at end of the year (in shares)		19,061
Options exercisable at end of the year (in shares)		19,061
Weighted Average Exercise Price [Roll Forward]
Options outstanding, weighted average exercise price at beginning of year (in dollars per share)	$ 21.78	$ 21.82
Forfeited, weighted average exercise price (in dollars per share)	21.78	21.81
Expired, weighted average exercise price (in dollars per share)	$ 21.78	21.88
Options outstanding, weighted average exercise price at the end of the year (in dollars per share)		21.78
Options exercisable, weighted average exercise price at the end of the year (in dollars per share)		$ 21.78
Options, Additional Disclosures [Abstract]
Options outstanding, weighted average remaining term at the end of the year		6 months
Options outstanding, average intrinsic value at the end of the year	$ 0
Options exercisable, average intrinsic value at the end of the year	$ 0
Director's Plan [Member] | Employee Stock Option
Summary of the Status of the Plan [Roll Forward]
Options outstanding at beginning of year (in shares)	4,725	12,724
Forfeited (in shares)	(1,575)	(3,181)
Expired (in shares)	(3,150)	(4,818)
Options outstanding at end of the year (in shares)		4,725
Options exercisable at end of the year (in shares)		4,725
Weighted Average Exercise Price [Roll Forward]
Options outstanding, weighted average exercise price at beginning of year (in dollars per share)	$ 21.78	$ 21.83
Forfeited, weighted average exercise price (in dollars per share)	21.78	21.83
Expired, weighted average exercise price (in dollars per share)	$ 21.78	21.88
Options outstanding, weighted average exercise price at the end of the year (in dollars per share)		21.78
Options exercisable, weighted average exercise price at the end of the year (in dollars per share)		$ 21.78
Options, Additional Disclosures [Abstract]
Options outstanding, weighted average remaining term at the end of the year		6 months
Options outstanding, average intrinsic value at the end of the year	$ 0
Options exercisable, average intrinsic value at the end of the year	0
Long Term Incentive Plan [Member]
Share-based Payment Award [Line Items]
Compensation expense	$ 70	$ 64
Number of shares authorized	1,000,000
Number of shares from unrestricted plan granted (in shares)	732,861
Share options authorized as a percentage of total class A common stock.	4.00%
Compensation expense remaining to be recognized	$ 55
Summary of the Status of the Plan [Roll Forward]
Granted (in shares)	5,000	146,500
Significant assumptions used to estimate fair value
Weighted average risk-free interest rate	1.14%	1.57%
Weighted average volatility	61.74%	77.01%
Weighted average expected life	5 years	5 years
Detail for non-vested shares [Roll Forward]
Granted (in shares)	5,000	146,500
Long Term Incentive Plan [Member] | Employees [Member] | Minimum [Member]
Share-based Payment Award [Line Items]
Period before options become exercisable	1 year
Long Term Incentive Plan [Member] | Employees [Member] | Maximum [Member]
Share-based Payment Award [Line Items]
Award expiration period	10 years
Long Term Incentive Plan [Member] | Director [Member] | Minimum [Member]
Share-based Payment Award [Line Items]
Award vesting period	1 year
Long Term Incentive Plan [Member] | Director [Member] | Maximum [Member]
Share-based Payment Award [Line Items]
Award expiration period	10 years
Long Term Incentive Plan [Member] | Employee Stock Option
Share-based Payment Award [Line Items]
Compensation expense remaining to be recognized	$ 55
Weighted average period of expense to be recognized	1 year
Summary of the Status of the Plan [Roll Forward]
Options outstanding at end of the year (in shares)	117,806
Long Term Incentive Plan [Member] | Restricted stock
Share-based Payment Award [Line Items]
Compensation expense	$ 15	$ 14
Number of shares from unrestricted plan granted (in shares)	225,000
Compensation expense remaining to be recognized	$ 16
Weighted average period of expense to be recognized	1 year
Detail for non-vested shares [Roll Forward]
Non-vested options at beginning of year (in shares)	25,000
Non-vested options at end of year (in shares)	25,000	25,000
Non-vested, Weighted Average Grant Date Fair Value [Roll Forward]
Non-vested options, weighted average exercise price at beginning of year (in dollars per share)	$ 1.80
Non-vested options, weighted average exercise price at end of year (in dollars per share)	$ 1.80	$ 1.80
Long Term Incentive Plan [Member] | Unrestricted Portion [Member]
Summary of the Status of the Plan [Roll Forward]
Options outstanding at beginning of year (in shares)	271,869	130,709
Granted (in shares)	5,000	146,500
Forfeited (in shares)	(26,064)	(5,340)
Options outstanding at end of the year (in shares)	217,139	271,869
Options exercisable at end of the year (in shares)	117,806	88,699
Weighted Average Exercise Price [Roll Forward]
Options outstanding, weighted average exercise price at beginning of year (in dollars per share)	$ 3.59	$ 5.60
Granted, weighted average exercise price (in dollars per share)	2.16	1.78
Forfeited, weighted average exercise price (in dollars per share)	3.11	3.98
Options outstanding, weighted average exercise price at the end of the year (in dollars per share)	3.93	3.59
Options exercisable, weighted average exercise price at the end of the year (in dollars per share)	5.67	$ 7.23
Weighted average fair value of options granted during the year (in dollars per share)	$ 2.16
Options, Additional Disclosures [Abstract]
Options outstanding, weighted average remaining term at the end of the year	6 years 3 months 18 days	3 years 8 months 12 days
Options exercisable, weighted average remaining term at the end of the year	4 years 8 months 12 days
Options outstanding, average intrinsic value at the end of the year	$ 48
Options exercisable, average intrinsic value at the end of the year	$ 0
Detail for non-vested shares [Roll Forward]
Non-vested options at beginning of year (in shares)	183,170
Granted (in shares)	5,000	146,500
Forfeited (in shares)	(21,334)
Vested (in shares)	(67,503)
Non-vested options at end of year (in shares)	99,333	183,170
Non-vested, Weighted Average Grant Date Fair Value [Roll Forward]
Non-vested options, weighted average exercise price at beginning of year (in dollars per share)	$ 1.94
Granted, weighted average grant date fair value (in dollars per share)	2.16
Forfeited, Weighted Average Grant Date Fair Value	1.86
Vested, weighted average exercise price at end of year (in dollars per share)	1.78
Non-vested options, weighted average exercise price at end of year (in dollars per share)	$ 1.86	$ 1.94